HTML, CSS, and JavaScript courses can help you learn web page structure, styling, and interactivity, along with responsive design and accessibility practices. You can build skills in creating layouts, implementing animations, and optimizing user experiences across different devices. Many courses introduce tools like code editors, version control systems, and browser developer tools, that support testing and refining your projects. By mastering these skills and tools, you’ll be well-equipped to develop engaging websites and applications.

Johns Hopkins University
Skills you'll gain: Cascading Style Sheets (CSS), Responsive Web Design, HTML and CSS, Bootstrap (Front-End Framework), Web Design, Browser Compatibility, User Interface and User Experience (UI/UX) Design, Javascript
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, HTML and CSS, Cascading Style Sheets (CSS), Web Content Accessibility Guidelines, GitHub, Web Design, Git (Version Control System), Browser Compatibility, Front-End Web Development, Web Development, Cloud Hosting, Usability, Typography
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Cascading Style Sheets (CSS), Web Design and Development, User Interface and User Experience (UI/UX) Design, Web Content Accessibility Guidelines
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: UI Components, HTML and CSS, Extensible Markup Language (XML), Cascading Style Sheets (CSS), Verification And Validation, Interactive Design, User Interface (UI), Web Design and Development, Web Content Accessibility Guidelines, Web Development, Web Design, Interaction Design, Data Validation, Debugging, Development Testing, Maintainability
Mixed · Course · 1 - 4 Weeks

Illinois Tech
Skills you'll gain: Javascript and jQuery, Responsive Web Design, Cascading Style Sheets (CSS), Web Design and Development, HTML and CSS, GitHub, Web Applications, JavaScript Frameworks, Web Development Tools, Git (Version Control System), Infrastructure Architecture, Browser Compatibility, Animations
Build toward a degree
Beginner · Course · 1 - 3 Months

EDUCBA
Skills you'll gain: Color Theory, Cascading Style Sheets (CSS), Typography, HTML and CSS, Web Design, Web Content Accessibility Guidelines, Semantic Web
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Event-Driven Programming, Web Development Tools, HTML and CSS, Web Development, Javascript, Web Applications, Web Design and Development, Cascading Style Sheets (CSS), Programming Principles
Intermediate · Guided Project · Less Than 2 Hours

Board Infinity
Skills you'll gain: Responsive Web Design, User Interface (UI) Design, Web Development Tools, HTML and CSS, Front-End Web Development, Javascript, Bootstrap (Front-End Framework), React.js, UI Components, Back-End Web Development, Semantic Web
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Full-Stack Web Development, Jest (JavaScript Testing Framework), Application Deployment, Unit Testing, JavaScript Frameworks, Data Structures, Back-End Web Development, Restful API, Application Programming Interface (API), Development Environment, Javascript, Front-End Web Development
Beginner · Course · 1 - 3 Months

Skills you'll gain: Browser Compatibility, Responsive Web Design, HTML and CSS, Cascading Style Sheets (CSS), Web Design, Extensible Markup Language (XML), Style Guides, Maintainability
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, Cascading Style Sheets (CSS), HTML and CSS, Web Design, Web Design and Development, User Interface and User Experience (UI/UX) Design, Animations, Typography, Color Theory
Beginner · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: Color Theory, Typography, Cascading Style Sheets (CSS), Web Content Accessibility Guidelines, Web Design, HTML and CSS, Animations, User Interface (UI) Design, Web Design and Development, Usability, Visualization (Computer Graphics)
Intermediate · Course · 1 - 4 Weeks