What is The Concept Behind CSS?

The concept behind CSS (a.k.a. cascading style sheets or style sheets) is really simple. CSS allows you make changes to all of the web pages that link to the CSS file at once by changing a style in the style sheet, instead of having to manually change every style in every HTML file.

CSS allows you to create a single document of code, similar to an HTML file, that lets you specify the colors, fonts, backgrounds, etc. of a web page. The CSS file is then linked to from the web page(s) that you want to have the same styles that you specify.

If CSS did this and only this, they would save you a lot of time to say the least, especially if you have a large or multiple web sites. This alone is worth learning CSS, however, style sheets allow you