CSS

CSS (Cascading Style Sheets) is a computer language that is used in cooperation with HTML to affect the appearance, or "style" of a website. It, on MediaWiki, can be used to affect the appearance of templates, using the TemplateStyles extension, or can be used with the CSS extension, for the better or for the worse; in this case, for the worse. There are several CSS programmers in the world, me included, and maybe even ! CSS is one of the three main programming languages intended specifically for websites, along with HTML and JavaScript, both of which are also widely used, including by me. This is an example of CSS code that you may want to try using:

Now add that to a page, and see what happens!