Web design and development websitesdela

Zdravo, Imamo iOS app, ki je deloma ze koncan, vendar bi potrebovali pregled in pa implementacijo zahtevnejsih zadev (custom mape, login ipd.). Rabimo torej izkusenega Swift programerja. Ce si pripravljen sodelovati, se pogovorimo o podrobnostih. Lp Alen …

...games: Coinflip and Crash. Key Features: - Coinflip: A simple, yet engaging game where users can bet on a coin toss outcome. - Crash: An exciting game where users bet on a multiplier before it "crashes", similar to popular gambling games. Payment Integration: - I'd like the website to support Credit/Debit cards, Cryptocurrencies, and E-wallets for a seamless user experience. User Account Functionalities: - The website should offer user registration and login options, as well as an account balance tracking feature. Ideal Skills and Experience: - Proficiency in web development, particularly in building interactive and secure gambling websites. - Experience with integrating various payment gateways and ens...

As someone in need of a personal website, I'm looking for someone to develop and design it with a professional and corporate style. The main feature my website requires is a photo and video gallery. Ideal Skills: - Strong web design abilities, with a particular emphasis on professional and corporate styles. - Extensive experience with website development, able to create a site from scratch. - Proficiency in creating and integrating a photo and video gallery in the website. - Experience in creating personal or corporate websites. These are the requirements, but there's definitely room for creative license. You can bring your own ideas and experiences to this project as well, making it a collab...

...transport company, I'm looking to develop a comprehensive mobile and desktop web app that will assist my drivers in pinpointing destinations with a high degree of accuracy. This positioning feature should be as precise as three meters. This app should be available on both iOS and Android platforms, and should include the following key features: - **Real-Time Tracking:** The app needs to have GPS tracking capabilities that enable real-time tracking of our drivers. This is essential for ensuring efficient route management and dispatching, and monitoring driver performance. - **Driver Communication:** The app should also include a driver-to-driver messaging feature. This will allow for better fleet coordination and communication, a...

I'm seeking an SEO expert to enhance my website's performance. My goals are to increase organic traffic, improve keyword rankings, and boost website visibility. - The target audience for my website is international, so familiarity with global SEO strategies is essential. - My website is somewhat optimized but still requires significant improvement. - I'm offering $20 monthly for a part-time commitment to this project. The ideal candidate should have: - Proven experience in international SEO - A track record of increasing organic traffic - Expertise in improving keyword rankings - A good understanding of website visibility enhancement - Strong communication skills as you'll be working part-time with me on this project

...help me create a finance website. I'm in need of someone who has a strong background in web development, particularly in creating intuitive user interfaces and crafting user-friendly web applications. Since the questionnaire was skipped, the website will require a range of functions, such as account registration and login, portfolio tracking, and possibly investment calculators. We can discuss the specific functionalities in more detail once we're in touch. If you have experience in finance or fintech, that would be a big plus, but it's not a requirement. The successful freelancer should include past works and experience in their application. I'm particularly interested in seeing examples of websites and...

...looking for a skilled web developer to create a professional and engaging wedding website for my celebrant services. The website should have the following features: - RSVP functionality: A feature that enables guests to confirm their attendance. - Photo gallery: A space to showcase my previous ceremonies and happy couples. - Event information: A section that provides details on upcoming events and my services. The website should comprise 6-10 pages in total, ensuring that all necessary content is effectively communicated to visitors. Prior experience with wedding websites is highly preferred. The ideal candidate should have a keen eye for design, an understanding of celebrant services, and the ability to create a user-friendly experienc...

...talented web developer to create a sleek and modern portfolio website for me. Key Features: - The website should have an engaging image gallery where I can showcase my work visually. - There should be a functional contact form to allow potential clients or collaborators to easily reach out to me. - Additionally, I would like to include a testimonials section where past clients or employers can leave feedback about my work. The site should be designed to have 1-5 pages. It should be easy to navigate, responsive, and visually appealing. Ideal Skills and Experience: - Proficient in web development with a strong portfolio of previous projects - Experience working on portfolio websites or similar projects - Ability to incorporate the k...

I'm in need of an expert to design and develop firmware for real-time tracking in an indoor positioning system using UWB modules. Your expertise should include: - Firmware development for Qorvo Decawave UWB modules (DWM1001C) - Firmware development for nRF52832 - Understanding and implementation of Real-time tracking with multiple tags and anchors - Knowledge of indoor tracking systems I expect the resultant firmware to offer efficient and accurate real-time tracking. Please only put a bid if you have relevant experience and are confident in this area. Your portfolio of similar projects will be asked for review. As a reference; firmware needs to be designed to work with 20 tags and 20 anchors in the same zone...

We are seeking a skilled Squarespace developer to design and build a professional website for our new company. The website will serve as our online presence and showcase our products and services to potential customers. The ideal candidate should have a strong understanding of Squarespace platform and be able to customize templates, implement branding elements, and optimize the site for SEO. Excellent design sense, attention to detail, and ability to deliver a visually appealing and user-friendly website are crucial. Skills required: - Proficiency in Squarespace platform - HTML/CSS coding skills - Graphic design and branding - SEO optimization

...should have the ability to manage users, with a specific focus on admins. - Reporting and Analytics: The system should incorporate robust reporting and analytics features that can offer insights into loan applications and user activity. - Application Rejection: There should be a clear mechanism for rejecting loan applications within the system. - Filters will be required to filter and sort data as per date, status, month. User Roles: - Admin: The primary user role I'm seeking is for admins to manage the system. Rejected Applications: - The system already have a mechanism in place to handle rejected loan applications. Ideal Skills: - Experience with CMS development - Strong understanding of data management and analytics - Proficiency in u...

More details: What level of customization would you like to have for the websites built through the saas software? Limited customization What categories of templates should the software include? Business Which of the following authentication systems do you want to be implemented in your saas software? Email/password-based

...experienced web developer specializing in Magento PHP to assist with an urgent project. The ideal candidate should be able to handle the following: - Work with Magento PHP: You must be proficient in Magento PHP development. Experience in customizing Magento-based websites and plugins is highly desirable. - Fast-paced: The project is time-sensitive and requires a quick turnaround. Therefore, you must be able to work efficiently and effectively under tight deadlines. - Detail-oriented: Attention to detail is key as the project involves the development of a user-friendly, high-quality web application. - Communication: Effective communication is crucial. You should be able to provide regular updates and be responsive to my quer...

...app developer with expertise in Flutter and Firebase integration. The project involves creating a Wishfy lookalike app for both Android and iOS platforms. Key Features: - User Registration & Login: The app should allow users to register and login securely. - Product Browsing & Searching: Implement a user-friendly interface for browsing and searching products. - Wishlist Management: Users should have the ability to create and manage their wishlists. Firebase Integration: - Authentication: Implement Firebase authentication for secure user onboarding. - Firestore Database: Utilize Firestore for efficient data storage and retrieval. The ideal candidate for this project should possess: - Proven experience in developing Flutter apps for bo...

...seeking a skilled web designer to develop a minimalistic, clean and functional e-commerce website for my business. I currently own the domain, so I need someone that can take my ideas and turn them into an engaging digital storefront. Key Features: - Shopping cart and checkout functionality for customers to make smooth and secure purchases. - Customer reviews section to allow for feedback and to build trust with prospective buyers. - Advanced product search and filter to help customers navigate and find exactly what they're looking for swiftly. - A dedicated offer page to frequently update customers about sales, deals or new product launches. Skills & Experience: - Proficient in creating minimalistic and clean des...

**Overview:** We are seeking a dynamic and motivated Business Development Executive/Manager to join our team on a commission or freelance basis. The ideal candidate will have 2-3 years of experience in the software and marketing industry with a focus on, Social Media Handling, Ad Campaigns, ERP software, and website development. This role requires a strong ability to close deals and drive revenue growth. **Responsibilities:** - Identify and prospect potential clients in the target market segments. - Develop and maintain relationships with clients to understand their needs and objectives. - Present our software solutions and services to potential clients effectively. - Negotiate and close deals to meet sale...

Based on what we discussed via chat I need to do 2 websites 1st website. similar to - landing page - contact page - introduction of the board - a blog page where we update monthly what our members are doing - a past events page with picture links to a google drive - a page putting a spotlight on the upcoming event venue (we have one event a month) 2nd website - landing page - dive site / wreck site list. - courses with description and prices - Where ppl can inform them selves about course serials and pricing as well as wreck dice site locations - and book / reserve / inquire about courses and wreck trips - update the page with the existing course and trip schedules - all small details we spoke via chat

For my WordPress site, I require an expert to set up conversion tracking. The main goal is to track conversions from a “Chat Now” WhatsApp button. Therefor...track conversions from a “Chat Now” WhatsApp button. Therefore, you will also need to install this button in the bottom right corner of the website. Ideal skills: - Experience with WordPress websites - Proficient in conversion tracking - Experience with integrating WhatsApp features into websites - Attention to placement detail; the button should not interfere with other elements of the site. You'll need to provide proof that the conversion tracking works properly, such as a screenshot or video. The ultimate aim is to improve user engagement across the site with simple, accessible means of...

...to peruse and get to know the cars we have on offer. Key Features: - The primary function of this platform is to showcase our car inventory. Therefore, the main focus should be on the design that will effectively showcase the cars in the best possible light. - I would like the website to have a user-friendly search and filter option. This is important as it will allow our clients to easily find the car they are looking for. - It's important that the site is designed to be responsive across various devices to ensure potential customers can access it no matter what device they are using. Ideal Skills and Experience: - Proficiency in web design and development - Previous experience in developing inventory showcasing web...

...professionals and businesses, my primary objective is to enhance the site's SEO performance, as well as make announcements relevant to the target audience. Key Project Details: - I'm looking to increase website traffic, improve search engine ranking, and enhance user engagement. This should be done through a combination of on-page and off-page SEO strategies. - Additionally, I need to distribute announcements that are relevant and appealing to professionals and businesses. This could include industry insights, event updates, or company news. Ideal Skills: - Proven experience in SEO for informational websites - Strong understanding of professional and business audience targeting - Excellent copywriting skills for creating enga...

We need 10,000 to 20,000 data, Uk Amazon Sellers Leads with work email, Postal codes, telephone numbers and websites, and Amazon store links, I do not have any example list to show how the leads should be so please carefully examine and only apply if you can fulfill and provide all the required information and we will also verify the leads as well, and if we like the quality of the data, we will buy 50,000 to 100,000 more leads as well, Make sure to enclose the sample data of UK amazon stores, without sample bid will not be read. As it is urgent and sure I will be looking forward to chat with you soon.

...developer to take on a complex web development project for me. The primary goal is to build a sophisticated web application with a focus on integrating social media APIs. Key Highlights: - Primary purpose: Web Development - Specific third-party integration: Social Media APIs Key Responsibilities: - Develop a high-quality, responsive web application - Integrate various social media APIs for seamless user experience Ideal Skills and Experience: - Proven track record in Python web development - Strong understanding of social media APIs - Experience in building complex and dynamic web applications - Ability to implement user-friendly interfaces - Understanding of security considerations in web developm...

...be designed with a modern theme in mind. The main features that we need included in the app are: - Product catalog: The app should be able to display our products in an engaging and user-friendly way. - Shopping cart: Users should be able to add and remove items to their cart as they browse through the app. - Payment gateway: The app should have a secure and reliable payment gateway that supports various payment methods. The ideal freelancer for this job should have: - Extensive experience in developing iOS applications, especially e-commerce apps. - A strong understanding of user experience and modern design principles. - Proficiency in integrating payment gateways into iOS apps. - Strong communication skills to keep me updated on the progress of ...

**Job Title: Business Development Executive/Manager (Commission-Based/Freelancer)** **Overview:** We are seeking a dynamic and motivated Business Development Executive/Manager to join our team on a commission or freelance basis. The ideal candidate will have 2-3 years of experience in the software industry, with a focus on ERP software, app development, and website development. This role requires a strong ability to close deals and drive revenue growth. **Responsibilities:** - Identify and prospect potential clients in the target market segments. - Develop and maintain relationships with clients to understand their needs and objectives. - Present our software solutions and services to potential clients effective...

I am looking for a skilled WordPress developer to create a website that is both visually appealing and user-friendly, with a primary focus on showcasing my portfolio. Key Project Details: - I don't have a domain name and hosting yet, so the successful freelancer will need to assist with this aspect. - Since the primary goal of the website is to display my portfolio, it is essential that the design and user interface are tailored to this purpose. Requirements: - Proficiency in WordPress website development - Experience with creating portfolio-centric websites is highly desired - Good understanding of user experience and design principles - Ability to assist with domain name and hosting acquisition The anticipated freque...

I've been struggling with a payment processing issue on my wellness website for over a month now. Users are unable to complete transactions using their credit cards, which harms my business significantly. To help me resolve this, I'm looking fo...complete transactions using their credit cards, which harms my business significantly. To help me resolve this, I'm looking for someone with: - Proven expertise in resolving similar payment processing problems - Knowledge of the common causes of credit card payment failures - Ability to troubleshoot and fix the issue as fast as possible Additionally, any experience with wellness or healthcare websites would be considered a plus, but not a necessity. Your primary goal will be to ensure smooth and successful ...

...create an exciting PC game for me. The game is centered around a character, Aviater, and their mission. The chosen freelancer will need to be capable of designing and developing the game from scratch and deliver it by the end of next month. Key Requirements: - Expertise in PC game development - Ability to develop a game from concept to delivery - Solid understanding of game design and mechanics - Strong communication skills and ability to work to deadlines The game will involve: - Action-packed gameplay that will keep players engaged - A compelling storyline that captures the player's interest - High-quality graphics and animations - Intuitive controls If you have a passion for creating immersive games and can meet ...

Hi Sir, I can create the macro as per instruction shared . Thanks Arun

I am looking for a Google Ads professional to fix my websites, google ads approval with specific Google ads errors listed that I simply do not have the time to do, but wish to have running again as they were successful until the conversion to google analytics for etc., I went through quickly and made some changes and seems it was a approvable, but there is something that was hinted is easily fixed however, someone with Google Ads knowledge would be able to quickly identify and fix whereas I would have to spend an much more time to identify it Main Goal: Increase website traffic Target Audience: it is HVAC ecommmerce heavy equipment sales which are shipped into the field, nationwide with fulfillment centers in nearly every state, so ship to the fields locally t...

I'm looking for a professional web developer to create a website using Elementor for my donation organization. The site should be visually appealing and user-friendly, as we aim to encourage visitors to contribute to our cause. Key Requirements: - Site should be built using Elementor - Design a professional and clean layout that resonates with a charity/donation theme - Integration with PayPal for donations - Implement necessary security measures to protect user data Ideal skills: - Proficient with Elementor, WordPress, and PayPal, VISA, Mastercard and other integration and ALL - Experience in designing and developing donation or e-commerce websites - Ability to deliver high-quality, responsive websites quickly ...

...to peruse and get to know the cars we have on offer. Key Features: - The primary function of this platform is to showcase our car inventory. Therefore, the main focus should be on the design that will effectively showcase the cars in the best possible light. - I would like the website to have a user-friendly search and filter option. This is important as it will allow our clients to easily find the car they are looking for. - It's important that the site is designed to be responsive across various devices to ensure potential customers can access it no matter what device they are using. Ideal Skills and Experience: - Proficiency in web design and development - Previous experience in developing inventory showcasing web...

I'm looking for a Stripe developer experienced with React, Node.js, and Firebase, to integrate a subscription management system into my application. The functionality required includes: - Implementing Stripe for subscription management - Establishing recurring billing on specific dates Currently, Stripe is running smoothly in our system, but we only sell non-recurring monthly packages. At this stage, we do not require options for customizing billing cycles, as they will be fixed. Ideal Candidate: - Extensive experience working with Stripe API - Proficiency with React, Node.js, and Firebase - Proven record in implementing subscription models - Familiarity with fixed billing cycles. Higher consideration will be given to candidates that can provide examples of their ...

I'm in need of a proficient CodeIgniter developer with a solid background in CakePHP. Your primary responsibility will be to set up the project and ensure timely completion. Key functionalities to be implemented include: - User registration and login system - A versatile content management feature - A secure payment gateway integration In addition, creativity is important as I'll need you to develop a clean and responsive design/template for the project. I require daily updates on progress. If you're a skilled, committed developer with a portfolio showcasing your capabilities in full-stack development, I'd love to hear from you. Please bid if you're serious.

I'm seeking a talented professional who can transfer my current WordPress website to Webflow. The new site should be a complete redesign, but without any negative impact on its current SEO ranking. Key Requirements: - Proficient in transferring websites from WordPress to Webflow - Skilled in designing and executing website redesigns - Strong understanding of SEO principles to ensure no damage occurs The primary goal for this redesign is to increase the website's conversion rates. In your application, please provide a detailed project proposal on how you will tackle this project, including your past experience in similar tasks.

...looking for a versatile web developer to craft a robust, user-friendly website for my business. The primary objective is to enhance the customer experience through a streamlined product life cycle management and CRM system. Key Features: - Seamless Customer Registration and Login: A simple, secure, and efficient method for customers to sign up and log in. - Intuitive Product Catalog and Description: A well-organized and informative product catalog that displays detailed descriptions to help customers make informed purchase decisions. - Comprehensive Order Tracking and History: A user-friendly interface that allows customers to easily track their orders and view their order history. Design Preferences: - Minimalistic...

...the upcoming proprietor of a modern, all-inclusive online clothing store, I'm in search of a skilled Shopify developer to help me realize my vision. My ideal candidate should be equipped with the following: Reference websites : & - Competence in Shopify 2.0 - Familiarity with modern web design principles. - The ability to implement and test personalization for products. My store will cater to a wide demographic, including women, men, and children. The successful freelancer will be tasked with developing an appealing and accessible online store that maintains a modern aesthetic while efficiently promoting a large variety of clothing items. The most significant functionality I wish to include is the ability for customers to personali...

I need a website developed...the website will be threefold: 1. Attract New Customers: The design should be clean, engaging, and eye-catching to draw new visitors. 2. Information Hub: It should provide detailed information about our services with vivid visuals and compelling content. 3. Easy Booking System: It should have a seamless and user-friendly booking system to enable customers to quickly and easily schedule appointments. Preference will be given to freelancers who can provide evidence of their relevant experience. It's crucial that you understand how to appeal to my target demographic, which includes people of all age groups. Therefore, experience designing websites with a broad appeal would be ideal. Present me with your proven trac...

...Research, particularly focusing on Curriculum Development. Requirements: - Knowledge in Education, specifically Elementary and Secondary levels - Skilled in Curriculum Development - Experience in academic writing Your main task will be to: - Create a comprehensive and well-researched thesis on the topic - Use a mixed methods research methodology - Pay attention to detail, ensuring the final product is of high quality and ready for submission. Ideal Skills and Experience: - Proven background in academic writing - Understanding of mixed methods research - Prior knowledge or experience in curriculum development - Education research expertise, especially in Elementary and Secondary levels In your proposal, please outline your re...

Join our team as a Python Selenium Web Scraper responsible for developing scraping scripts using Python and Selenium. You'll gather data from diverse websites, utilizing your expertise in web technologies, HTML, CSS, and JavaScript. Key responsibilities include analyzing website structures, extracting and cleaning data, and collaborating with team members to integrate data into existing systems. Ideal candidates possess proficiency in Python, experience with Selenium, and a strong understanding of web technologies. This role offers competitive compensation, flexible work hours, health benefits, and opportunities for career growth in a dynamic, collaborative environment

I'm looking for an experienced game developer to create an engaging simulation game aimed at adults, to be played on mobile dev...experienced game developer to create an engaging simulation game aimed at adults, to be played on mobile devices. The ideal candidate will: - Have previous experience in simulation game development. - Demonstrable ability to create engaging, challenging, and entertaining gameplay. - Knowledge of leading mobile platforms and compatibility. - Expertise in coding and development tools. - Be able to work to a schedule, delivering progress updates regularly. Remember, the game needs to appeal to an adult audience so the complexity and sophistication of the gameplay should match this. Looking forward to seeing your por...

As the project owner, I am urgently seeking experienced PHP developers to enhance the capabilities of multiple open source projects. The exact projects requiring development haven't been specified, but the key components will include: Brief description: Members can also upload items (only to designated columns set by administrators). Assumption: The administration will set up a category column—Card Trading. Members who log in can upload related items to sell, but only to that column; they cannot upload to other columns. Let's break it down step by step: User Column: Modify the administrator's product management template. The administrator will set up a category, such as the Card Trading Market. Then, all items uploaded by users will be categorized under th...

...casino games are in focus and all things around it, including main operators, target audience, regulative organisations, etc. Please don't use a complicated diagrams with numbers and dry copy paste, cause we have already done it on our side :) As result of this project we are waiting for simple and well structured document no matter pdf, page in Notion or Google docs. That will be a starting point to do things. We are going to understand how people spin in Spain and who is in charge of it. We are not gonna launch another online casino there. Just for research purpose. What we are expecting to see in this market research 1. The main local players e.g. top 10 on the market including international ones, if any, that target their products in Spain (main p...

I'm looking to have a business website designed for my company. The main purpose of the site is to provide information about the company. Key Features: - About Us Page - Contact Form - Testimonials Section - Services - Feedback Reviews The ideal candidate for this job should have experience in designing and developing business websites. Strong graphic design skills and an understanding of user experience and user interface design would be beneficial. Experience with e-commerce functionality may be helpful, even though the primary focus is on informational content.

I'm seeking an experienced app developer capable of creating an information sharing application for both iOS and Android systems. The primary aim of the app surrounds the exchange and access of information. A key requirement is the incorporation of specific features such as: - User reviews: App users should be able to leave and view reviews. - Product search: To facilitate easy information access, the app should house a well-optimized product search feature. An ideal candidate should have extensive experience in both iOS and Android app development, with a focus on creating user-friendly interfaces and robust search functions. A familiarity with integrating user review systems would be beneficial. These combined skills will contribute dra...

...plastic resin, I'm looking for a Business Development person who can assist in implementing my existing marketing strategy to push our eco-friendly plastic pellets to our main target market: the manufacturing industry. Ideal Skills and Experience: - Familiarity with the manufacturing industry which uses recycled plastic resin - Proven experience in B2B sales, marketing and business development Your role would not only involve marketing but also understanding the benefits and uses of our recycled plastic pellets. No need to devise a strategy, just help in executing and possibly refining the one I have. Your insight into our target industry will be essential. If you can find me new manufacturing customers that used recycled plastic (PP, L...

I'm looking for a skilled web developer to help create a e-commerce website for my business. Key Requirements: - Development of a user-friendly and visually appealing e-commerce platform. - Ensuring the site's design is responsive and mobile friendly. - Implementation of essential e-commerce features such as product pages. I'd like this project to be completed within a month, so I'm looking for someone who can work efficiently and effectively. Experience with similar projects and a solid portfolio are a definite plus. My budget is of 1500rs

...Android-based e-commerce application. The primary goal of this app is to facilitate the sales of products. Key Features: - E-commerce Functionality: This app should be designed to allow users to easily browse and purchase products through a user-friendly interface. - Payment Integration: The app should be integrated with PayPal and Credit/Debit Card processing for seamless and secure transactions. The ideal candidate for this project should have: - Proven experience in Android app development, particularly in e-commerce. - Strong understanding of payment integration systems, especially with PayPal and Credit/Debit Cards. - A portfolio demonstrating past successful e-commerce app projects. If you are confident in your ability to deliver on these re...

I am looking for a skilled Android developer to create...a skilled Android developer to create an eCommerce app. This app will have the ability to process payments via credit cards and feature user accounts for simple login purposes. Key requirements: - Develop an Android eCommerce app - Integrate credit card payment functionality - Implement user accounts with simple login Ideal skills and experience: - Proficient in Android app development - Experience with eCommerce app development - Knowledge of integrating credit card payment gateways - Familiar with user account management in apps - Prior experience in creating secure, user-friendly apps In your bid, please include examples of your previous eCommerce app work and any relevant experience you have...

...between the two) - Utilizing MATLAB to analyze historical data, develop mathematical models, and simulate various scenarios to determine the most effective battery usage strategy - Collaborating with me to understand the specific device or system the battery is being used for, and tailor the strategy accordingly - Providing an actionable, detailed plan for implementing the optimal battery usage strategy Ideal Skills and Experience: - Proficiency in MATLAB and experience in developing complex mathematical models - Extensive knowledge of battery systems and their performance characteristics - Strong analytical skills and the ability to interpret and utilize historical data - Excellent communication skills and the ability to work col...

本项目旨在开发一个基于 和 MDX 的互动学习网站。我们的目标是实现一个翻转卡片选择题组件，以增强用户的学习体验。该组件将嵌入到由 Contentlayer 处理的 MDX 文件中，并能够加载自定义 React 组件。 This project aims to develop an interactive learning website based on and MDX. Our goal is to implement a flip card quiz component to enhance the user's learning experience. This component will be embedded into MDX files processed by Contentlayer and will be capable of loading custom React components.