CSS .class Selector
Select and style all elements with class="intro":
More "Try it Yourself" examples below.
Definition and Usage
The .class selector selects elements with a specific class attribute.
To select elements with a specific class, write a period (.) character, followed by the name of the class.
You can also specify that only specific HTML elements should be affected by a class. To do this, start with the element name, then write the period (.) character, followed by the name of the class (look at Example 1 below).
HTML elements can also refer to more than one class (look at Example 2 below).
Style all <p> elements with class="hometown":
This <p> element wil be styled according to class="center" AND to class="large":