The concept behind CSS (aka cascading style sheets or style sheets) is really simple. CSS allows you to create a single document of code corresponding to an HTML file, which lets you specify the colors, fonts, backgrounds, etc. of a web page. CSS file is then linked to this web page (s) you want the same styles that you specify.
CSS allows you to make changes in all pages that link to the CSS file at once by changing a style in the stylesheet instead of having to manually switch every style in every HTML file.
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 sites. This alone is worth learning CSS, however, style sheets allow you to do this and much more.
CSS also allo
ws you to:
Position text and graphics precisely where you want
Add rollover effects to links
Control spacing between letters, lines, margins, borders website
Specify the units such as centimeters, pixels, points and more
Hide content from certain browsers in certain situations. An example of this is when you have some content that you want to be shown only in your web pages, but not in print.
Some advantages of CSS
Your web pages load faster because there is less code to transfer
There is less code to write
It is easier to have a consistent look and feel throughout your site
Updating and maintaining websites is much easier and less time consuming
In the end, CSS can save you a lot of time and effort and is very easy to learn.
