You can swap HTML and CSS files independently ... with no semantic value. Make sure you validate your HTML and CSS, using a service like the W3C’s validator. This will warn you about obsolete ...

Cascading Style Sheets (CSS ... to make a background fixed on the screen when users scroll up or down. Open your Web page in Notepad or a code editor to see its code. Look for the HTML element ...

All you have to do is store your HTML, JavaScript, and CSS files, and then share a link to your starting HTML file. In fact, Google is eating its own dog food by hosting the instructions on how to ...

a JavaScript file and the HTML file itself. The cascading nature of CSS files is attributed to the fact that style information for a webpage can be defined in any of three different places, also known ...