When should I use a link and when should I use a button?

Use a link to navigate to a URL. Use a button for an action such as submitting a form or opening a dialog. Choose the element for its job, then style it as needed. A button inside a form defaults to submitting, so use type="button" for an unrelated action. Semantic elements make keyboard and assistive-technology behaviour easier to get right.

<a href="/learn">Open lessons</a>
<button type="submit">Submit my form</button>

CookieSensei starter Q&A · example discussion.