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.

École Polytechnique
Skills you'll gain: Energy and Utilities, Climate Change Mitigation, Electrical Power, Environmental Issue, Sustainable Design, Hydrology, Electric Power Systems, Time Series Analysis and Forecasting, Water Resource Management, Predictive Modeling, Environment, Estimation, Mathematical Modeling, Physical Science
Intermediate · Course · 1 - 3 Months

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

Board Infinity
Skills you'll gain: Angular, HTML and CSS, Data Structures, Spring Boot, Eclipse (Software), Restful API, Java Programming, JavaScript Frameworks, Object Oriented Programming (OOP), Model View Controller, Java, Front-End Web Development, Spring Framework, Object Oriented Design, Integrated Development Environments, Javascript, Software Design Patterns, Development Environment, Web Applications, Cascading Style Sheets (CSS)
Intermediate · Specialization · 1 - 3 Months

Scrimba
Skills you'll gain: Prompt Engineering, Responsive Web Design, Node.JS, Command-Line Interface, TypeScript, Unit Testing, SQL, HTML and CSS, Web Content Accessibility Guidelines, Typography, Cascading Style Sheets (CSS), Ajax, React.js, User Interface and User Experience (UI/UX) Design, Hypertext Markup Language (HTML), JavaScript Frameworks, JSON, Generative AI, Database Design, UI Components
Beginner · Specialization · 3 - 6 Months
University of Michigan
Skills you'll gain: Responsive Web Design, HTML and CSS, Web Design, Cascading Style Sheets (CSS), Bootstrap (Front-End Framework), Wireframing, User Interface (UI) Design, Browser Compatibility, Usability, Web Content Accessibility Guidelines, Mobile Development, Javascript
Beginner · Course · 1 - 4 Weeks
University of Illinois Urbana-Champaign
Skills you'll gain: Application Specific Integrated Circuits, Hardware Design, Computer-Aided Design, Systems Design, Computer Architecture, Network Routing, Computational Logic, Electrical Engineering, Data Structures, Algorithms, Graph Theory, Mathematical Modeling, Calculus
Intermediate · Course · 1 - 3 Months

Skills you'll gain: HTML and CSS, Responsive Web Design, Web Design, User Experience Design, Usability, User Centered Design, User Interface (UI) Design, Persona (User Experience), Adobe Photoshop, Figma (Design Software)
Intermediate · Guided Project · Less Than 2 Hours

Board Infinity
Skills you'll gain: Angular, HTML and CSS, JavaScript Frameworks, Application Frameworks, Javascript, Hypertext Markup Language (HTML), Front-End Web Development, Scalability, Web Applications, Cascading Style Sheets (CSS), Web Development, Software Design, UI Components
Intermediate · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: Finite Element Methods, Engineering Analysis, Numerical Analysis, Mathematical Modeling, Advanced Mathematics, C++ (Programming Language), Object Oriented Programming (OOP)
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Django (Web Framework), Responsive Web Design, Cascading Style Sheets (CSS), HTML and CSS, Back-End Web Development, Relational Databases, Object Oriented Programming (OOP), Database Management Systems, Bootstrap (Front-End Framework), SQL, Database Design, Databases, Front-End Web Development, Database Administration, Unit Testing, MySQL, Web Development, Computer Programming, Pseudocode, Communication
Beginner · Specialization · 3 - 6 Months

University of London
Skills you'll gain: Responsive Web Design, Cascading Style Sheets (CSS), JSON, HTML and CSS, Ajax, Web Content Accessibility Guidelines, Javascript, Web Design, Semantic Web, Usability, Web Applications, Web Development, Web Content, Usability Testing, Interactive Design, Data Structures, Application Frameworks, Network Protocols, Data Ethics, Animations
Beginner · Specialization · 1 - 3 Months

Lund University
Skills you'll gain: Sustainable Business, Sustainable Design, Sustainable Development, Environment and Resource Management, Environmental Engineering, Strategic Sourcing, Environmental Science, Supply Management, Social Impact, Environmental Policy, Business Analysis, Innovation, Stakeholder Engagement, Policy Analysis
Beginner · Course · 1 - 3 Months