What is CSS
CSS stands for Cascading Style Sheets. It is a style sheet language which is
used to describe the look and formatting of a document written in markup
language. It provides an additional feature to HTML. It is generally used with
HTML to change the style of web pages and user interfaces. It can also be used
with any kind of XML documents including plain XML, SVG and XUL.
CSS is used along with HTML and JavaScript in most websites to create user
interfaces for web applications and user interfaces for many mobile
applications.
What does CSS do
oYou can add new looks to your old HTML documents.
oYou can completely change the look of your website with only a few
changes in CSS code.
Why use CSS
These are the three major benefits of CSS:
1) Solves a big problem
Before CSS, tags like font, color, background style, element alignments, border
and size had to be repeated on every web page. This was a very long process.
For example: If you are developing a large website where fonts and color
information are added on every single page, it will be become a long and
expensive process. CSS was created to solve this problem. It was a W3C
recommendation.
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2) Saves a lot of time
CSS style definitions are saved in external CSS files so it is possible to change
the entire website by changing just one file.
