CSS selectors provide a way to specify what elements on the page get which styles. The "selector" is the text in front of the curly braces. There are 3 primary types of CSS selectors:
- Tag Selector: Matches all elements with a certain tag name.
- ID Selector: matches with 1 element on the page that has id="myID"
- Class Selector: matches with any elements on the page that have class="classname"