Buttons are buttons, links are links in HTML & CSS
HTML & CSS interview exercise on Accessibility, difficulty 2 of 3. Solve it in the editor beside a worked example, or cold in Interview mode with the example hidden; the tests run the moment you do.
A toolbar for a document: three actions that do something on the page (Save, Share, Delete) and one that takes you somewhere (a link to /docs/help called Help). Actions are buttons with an explicit type so they never submit a form by accident; the navigation is a link with an href. No clickable divs or spans, and no links with href="#".
Each exercise pairs a worked example with a twin problem to solve in a real editor; the tests run the moment you do. Interview mode hides the example: solve it from memory, without the hint or the solution, and it counts as solved cold. Progress is saved in your browser, and in your account if you sign in.