Type that scales with the user in HTML & CSS
HTML & CSS interview exercise on Box model & units, difficulty 1 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.
Set the type sizes in rem so they follow the browser's base size (16px by default): the headline at twice the base, the body at the base, the footnote at three quarters of it. Give the headline a bottom margin of half a rem and the paragraph a line height of 1.5 (unitless).
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.