HTML5 and CSS3 are Modern Web Design Fundamentals, and a certain level of expertise could be the difference between great web-responsive designs and jaded ones. The building foundations for HTML5 and CSS3 were Hypertext Markup Language (HTML) and Cascading Style Sheets (CSS).
HTML was created by Berners-Lee and was the first language (not to be confused as a programming language) used in developing web applications, which makes its relevance still reasonable. CSS, developed by the World Wide Web Consortium (W3C), was born out of the need to style the HTML components of the Web.
You can think of a web as a body with HTML serving as a structure like bones and muscles, and CSS has its skin tone and overall appearance. In essence, one is a structural language that defines the structure of a webpage, and the other is a declarative language with the exclusive purpose of defining the appearance and positioning of HTML elements on a webpage.
HTML5 and CSS3 are modern variations of HTML4 and CSS2. Although older versions of CSS, CSS2 and CSS2.1 can all be used in conjunction with each other, the latest version of HTML5 is currently the standard and you cannot use HTML4, XHTML, and HTML5 elements at the same time.
A quick guide to mastering HTML5 and CSS3 is by practice, reading, and studying the code of websites you like, using developer tools on browsers to see style guides, and following tutorials that build live projects.
Below are some free sources to master HTML5 and CSS3, giving you in-depth knowledge sufficient to scale front-end development.
- (https://www.freecodecamp.org )
- (https://codepen.io )
- (https://developer.mozilla.org)
- (https://www.w3schools.com)
Another Comprehensive source is the HTML and CSS3 beginner tutorial series on YouTube: (https://youtu.be/LqvFIuVlyP8?si=ntajM0vA847xax6g )
Have a great time learning and enjoy!
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