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.

Scrimba
Skills you'll gain: User Interface (UI) Design, Color Theory, User Interface (UI), Typography, Web Design, HTML and CSS, Design Elements And Principles, Graphic and Visual Design
Intermediate · Course · 1 - 4 Weeks

Korea Advanced Institute of Science and Technology(KAIST)
Skills you'll gain: Linear Algebra, Artificial Intelligence, Applied Mathematics, Deep Learning, Machine Learning, Supervised Learning, Mathematical Modeling
Beginner · Course · 1 - 3 Months

Technical University of Denmark (DTU)
Skills you'll gain: Biotechnology, Process Engineering, Chemical and Biomedical Engineering, Chemical Engineering, Sterilization, Biological Engineering, Microbiology, Process Control, Cell Cultures, Production Process, Biochemistry, Scalability, Manufacturing Processes, Process Development, Molecular Biology, Cell Biology, Sterile Procedure
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Real-Time Operating Systems, Embedded Systems, Embedded Software, Hardware Architecture, Electronic Systems, Performance Tuning, Systems Architecture, Software Architecture, Verification And Validation, System Programming, Debugging, Real Time Data, System Design and Implementation, Software Technical Review, Systems Engineering, Operating Systems, Software Design, System Software, Ubuntu, Software Systems
Build toward a degree
Intermediate · Specialization · 3 - 6 Months

Ludwig-Maximilians-Universität München (LMU)
Skills you'll gain: Ancient History, Governance, Social Studies, World History, Anthropology, Diplomacy, Sociology, Political Sciences, Economics
Beginner · Course · 1 - 3 Months

Rutgers the State University of New Jersey
Skills you'll gain: Data Analysis Software, Image Analysis, Scientific Visualization, Spatial Analysis, Science and Research, Physics, Physical Science, General Science and Research, Scientific Methods
Beginner · Course · 1 - 3 Months

Tecnológico de Monterrey
Skills you'll gain: Education Software and Technology, Calculus, Applied Mathematics, Algebra, Mathematical Modeling, Mathematics Education, Graphing, Derivatives
Mixed · Course · 1 - 4 Weeks

Universidade de São Paulo
Skills you'll gain: Life Sciences, Physical Science, Biology, General Science and Research, Biochemistry, Physics, Experimentation, Chemistry, Environmental Science
Beginner · Course · 1 - 4 Weeks

Tecnológico de Monterrey
Skills you'll gain: Arithmetic, Mathematics Education, Mathematical Modeling, Education Software and Technology, Calculus, Applied Mathematics, Mathematical Theory & Analysis, Algebra, Graphing
Mixed · Course · 1 - 4 Weeks

University of Geneva
Skills you'll gain: Sustainable Development, Geographic Information Systems, Environment, Environmental Resource Management, Natural Resource Management, Spatial Analysis, Sustainability Standards, Environmental Science, Environmental Policy, Hydrology, Economics, Governance, Stakeholder Engagement, Case Studies
Intermediate · Course · 1 - 3 Months

University of Alberta
Skills you'll gain: Research, Science and Research, Ancient History, Biology, Physics, Anthropology
Mixed · Course · 1 - 3 Months

The University of Edinburgh
Skills you'll gain: Writing
Beginner · Course · 1 - 4 Weeks