--- id: 6141019eadec6d2c6c6f007b title: Step 25 challengeType: 0 dashedName: step-25 --- # --description-- You can use `@keyframes` rules to control more than just the transformation of an element. In the `0%` selector of your `@keyframes cabins`, set the `background-color` to `yellow`. # --hints-- Your `0%` selector should have a `background-color` property set to `yellow`. ```js assert(new __helpers.CSSHelp(document).getCSSRules('keyframes')?.[1]?.cssRules?.[0]?.style?.backgroundColor === 'yellow'); ``` # --seed-- ## --seed-contents-- ```html Ferris Wheel
``` ```css .wheel { border: 2px solid black; border-radius: 50%; margin-left: 50px; position: absolute; height: 55vw; width: 55vw; max-width: 500px; max-height: 500px; animation-name: wheel; animation-duration: 10s; animation-iteration-count: infinite; animation-timing-function: linear; } .line { background-color: black; width: 50%; height: 2px; position: absolute; top: 50%; left: 50%; transform-origin: 0% 0%; } .line:nth-of-type(2) { transform: rotate(60deg); } .line:nth-of-type(3) { transform: rotate(120deg); } .line:nth-of-type(4) { transform: rotate(180deg); } .line:nth-of-type(5) { transform: rotate(240deg); } .line:nth-of-type(6) { transform: rotate(300deg); } .cabin { background-color: red; width: 20%; height: 20%; position: absolute; border: 2px solid; transform-origin: 50% 0%; animation: cabins 10s ease-in-out infinite; } .cabin:nth-of-type(1) { right: -8.5%; top: 50%; } .cabin:nth-of-type(2) { right: 17%; top: 93.5%; } .cabin:nth-of-type(3) { right: 67%; top: 93.5%; } .cabin:nth-of-type(4) { left: -8.5%; top: 50%; } .cabin:nth-of-type(5) { left: 17%; top: 7%; } .cabin:nth-of-type(6) { right: 17%; top: 7%; } @keyframes wheel { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } } --fcc-editable-region-- @keyframes cabins { 0% { transform: rotate(0deg); } 100% { transform: rotate(-360deg); } } --fcc-editable-region-- ```