--- id: 612e95ef2e4bdf41f69067f9 title: Step 12 challengeType: 0 dashedName: step-12 --- # --description-- Set the `margin` of the `#piano` to `80px auto`. # --hints-- Your `#piano` selector should have the `margin` property set to `80px auto`. ```js assert(new __helpers.CSSHelp(document).getStyle('#piano')?.margin === '80px auto'); ``` # --seed-- ## --seed-contents-- ```html Piano
``` ```css html { box-sizing: border-box; } *, *::before, *::after { box-sizing: inherit; } --fcc-editable-region-- #piano { background-color: #00471b; width: 992px; height: 290px; } --fcc-editable-region-- ```