css stands for Cascading Style Sheet. CSS allows you to create rules that specify how the content of an element should appear.
CSS control the look and feel of a web page. Using CSS, you can control ,
the color of the text, the style of fonts, the spacing between paragraphs,
how columns are sized and laid out,
what background images or colors are used, as well as a variety of other effects.
CSS is easy to learn and understand but it provides a powerful control over the presentation of an HTML document.
Most commonly, CSS is combined with the markup languages HTML or XHTML.