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.

LearnKartS
Skills you'll gain: Object Oriented Programming (OOP), Object Oriented Design, Web Development Tools, Frontend Performance, Performance Tuning, Javascript, Node.JS, Web Development, Scripting Languages, Web Applications, Computer Programming, Development Environment, Front-End Web Development, Web Design and Development, Programming Principles, Program Development, Event-Driven Programming, Frontend Integration, Data Structures, Functional Design
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Deployment, Software Development Life Cycle, Open Web Application Security Project (OWASP), OpenShift, Containerization, Istio, Kubernetes, Node.JS, Software Architecture, Application Deployment, Restful API, Database Design, Cloud-Native Computing, Git (Version Control System), Responsive Web Design, Ajax, Grafana, Javascript, Azure DevOps, Software Development
Beginner · Professional Certificate · 3 - 6 Months

Infosec
Skills you'll gain: Authentications, Secure Coding, Cryptography, Application Security, Web Applications, Javascript, Identity and Access Management, Node.JS, Security Awareness
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Javascript, JavaScript Frameworks, Program Development, Web Development, Angular, Vue.JS, Application Development, React.js, Web Applications, Event-Driven Programming, Object Oriented Programming (OOP), Programming Principles, Computer Programming, Data Structures, Software Engineering, Computer Science
Intermediate · Course · 1 - 3 Months

Packt
Skills you'll gain: Django (Web Framework), Dashboard Creation, Model View Controller, Authentications, Chart.js, Data Import/Export, Full-Stack Web Development, Web Development, Data Modeling, Object-Relational Mapping, Cascading Style Sheets (CSS), Responsive Web Design, Javascript, Code Reusability, User Interface (UI), Development Environment, Hypertext Markup Language (HTML)
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Extensible Markup Language (XML), Extensible Languages and XML, Cascading Style Sheets (CSS), HTML and CSS, Hypertext Markup Language (HTML)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: LESS, Cascading Style Sheets (CSS), HTML and CSS, Code Reusability, Frontend Performance, Web Design and Development, Front-End Web Development, Maintainability, Operations, Arithmetic, Web Development, Scalability
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Software Design Patterns, Object Oriented Design, Object Oriented Programming (OOP), Javascript, Software Design, Maintainability, Application Development, Event-Driven Programming, Prototyping, Context Management
Advanced · Course · 1 - 3 Months

Coursera
Skills you'll gain: Hypertext Markup Language (HTML), Web Content Accessibility Guidelines, Semantic Web, Web Content, Web Design, Web Development, Front-End Web Development
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Hypertext Markup Language (HTML), Application Programming Interface (API), Application Development, Computer Graphics
Beginner · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Javascript, Web Development
Intermediate · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Responsive Web Design, Git (Version Control System), Web Development, Cascading Style Sheets (CSS), Data Persistence, React.js, Version Control, Performance Tuning, Full-Stack Web Development, GitHub, Event-Driven Programming, HTML and CSS, Application Design, Development Testing, Video Game Development, Software Design Documents, Game Design, Program Development, Software Testing, Javascript
Beginner · Professional Certificate · 3 - 6 Months