Can you have multiple classes on an HTML element?

Difficulty: 4/10

class attribute, CSS specificity, DOM manipulation

Using Multiple Classes in HTML

Yes, in HTML an element can have multiple classes. You simply separate the class names with spaces inside the class attribute. This allows an element to inherit styles or behaviors from multiple CSS class selectors.

Example: Multiple Classes

Key Points About Multiple Classes

1
Separate multiple class names with a space (e.g., class="btn primary large").
2
An element can inherit styles from all the classes applied to it.
3
Order of class names in the attribute does not matter, but CSS rules with higher specificity or later in the stylesheet take precedence.
4
Multiple classes are commonly used to create reusable, modular styling in CSS frameworks like Bootstrap or Tailwind.

Scenario Questions

0-2 years experience

1How would you add two CSS classes to a button element in plain HTML?
2If you accidentally list the same class name twice in the class attribute, what effect does that have on styling?
3You need to style a paragraph differently in two contexts; how would you use multiple classes to achieve that?

Follow-up Questions

Can you show a short HTML snippet that adds two classes to an element?
How would you programmatically verify that the expected classes are present at runtime?
What happens if the same class name appears twice in the class attribute?