CSS enables us to define many many rules for fonts, colors, sizes, positions, opacity, etc.
If you look for a specific rule, a good entry point is the w3school website.
In the following, we will see some basic rules so you can play with CSS.
text-align: center;
text-decoration: none;
text-transform: uppercase;
font-style: normal;
font-style: italic;
font-style: oblique;