These paragraphs illustrate how you can use the class attribute for a tag (e.g. <p class="something">) and a corresponding CSS selector + declaration to specify the style for that class).
Hi there. This is a normal happy paragraph.
This is an alarming paragraph with one class.
This is not an alarming paragraph.
This is a super-alarming paragraph with two classes.
How did we get this list to show letters instead of numbers? What would happen if you gave one of the <li> tags an "alarming" class? What if you made <ol> alarming?