Codecademy

HTML & CSS: This interactive course teaches you the basics of HTML and CSS, the building blocks of web development. (https://www.codecademy.com/learn/learn-html-css)

freeCodeCamp

Responsive Web Design Certification: This comprehensive course covers HTML, CSS, and responsive design techniques. (https://www.freecodecamp.org/learn/responsive-web-design/)

Coursera

Web Design for Everybody: Basics of Web Development & Coding Specialization: This specialization covers HTML, CSS, and JavaScript, and provides hands-on projects to reinforce your learning. (https://www.coursera.org/specializations/web-design)

Udemy

Web Design for Beginners: Real World Coding in HTML & CSS: This course teaches you HTML and CSS from scratch, with practical examples and projects. (https://www.udemy.com/course/web-design-for-beginners-real-world-coding-in-html-css/)

Mozilla Developer Network (MDN)

Learn web development: MDN offers a comprehensive set of resources, including tutorials, guides, and reference materials, to learn web development technologies like HTML, CSS, and JavaScript. (https://developer.mozilla.org/en-US/docs/Learn)

Khan Academy

HTML/JS: Making webpages interactive with JavaScript: This course covers HTML, CSS, and JavaScript, focusing on creating interactive webpages. (https://www.khanacademy.org/computing/computer-programming/html-js)

W3Schools

HTML Tutorial and CSS Tutorial: W3Schools provides detailed tutorials on HTML and CSS, along with interactive examples and exercises. (https://www.w3schools.com/html/ and https://www.w3schools.com/css/)

YouTube

The Net Ninja's Web Development Tutorials: This YouTube channel offers a series of web development tutorials covering HTML, CSS, JavaScript, and more. (https://www.youtube.com/playlist?list=PL4cUxeGkcC9ivBf_eKCPIAYXWzLlPAm6G)

Google Developers

Web Fundamentals: This resource from Google covers various web development topics, including responsive design, performance optimization, and accessibility. (https://developers.google.com/web/fundamentals)

Scrimba

Learn Responsive Design: In this course, you'll learn how to build responsive websites using HTML, CSS, and media queries. (https://scrimba.com/learn/responsive)

Code.org

Intro to HTML/CSS: This course is designed for beginners and introduces HTML and CSS through interactive activities. (https://code.org/curriculum/html-css)

Odin Project

The Odin Project is a free online curriculum that covers web development from the ground up, including HTML, CSS, JavaScript, and more. (https://www.theodinproject.com/)

Remember to explore each course's syllabus, pace, and learning format to find the one that suits your learning style and objectives the best. Happy coding!