2. HTML. We write HTML in files that end with the .html extension (like homepage.html).. To write HTML and CSS code, you’ll want to install a code editor.Nowadays, one of the most popular free ...

CSS rules can be added to already existing HTML files or can be stored in separate .CSS files and linked to a webpage. CSS rules. ... The selector points to the HTML element you want to style.

Note that, unlike HTML, the CSS code doesn’t use quotation marks in its path to the image. Although they’re permissible, Internet Explorer 5 on the Mac can’t find the image if it’s ...