HTML stands for “hypertext markup language,” and it’s the principal language for content display on the web. Because HTML tags text files to render fonts, colors, graphics and hyperlink effects on websites, it’s a part of everything we do on the web.

CSS stands for “Cascading Style Sheets.” Essentially, by utilizing CSS, you’re creating styling rules that can be applied across all pages of a website, wherever those rules are applied, without having to recode every element of every page. Mastery of CSS allows us to create visually stunning design without slowing down page-load times and application performance.