freeCodeCamp/curriculum/challenges/portuguese/14-responsive-web-design-22/learn-css-animation-by-buil.../6169ab1aaeb4cd1174def700.md

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---
id: 6169ab1aaeb4cd1174def700
title: Passo 27
challengeType: 0
dashedName: step-27
---
# --description--
Como a animação está em um loop infinito e as cores de início e fim não são iguais, a transição ficará em branco quando ela voltar para amarelo depois do vermelho.
Para começar a corrigir isso, remova a cor de fundo `background-color` do seu seletor `0%`.
# --hints--
Você deve remover a propriedade `background-color` do seletor `0%`.
```js
assert(!new __helpers.CSSHelp(document).getCSSRules('keyframes')?.[1]?.cssRules?.[0]?.style?.backgroundColor);
```
# --seed--
## --seed-contents--
```html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Ferris Wheel</title>
<link rel="stylesheet" href="./styles.css">
</head>
<body>
<div class="wheel">
<span class="line"></span>
<span class="line"></span>
<span class="line"></span>
<span class="line"></span>
<span class="line"></span>
<span class="line"></span>
<div class="cabin"></div>
<div class="cabin"></div>
<div class="cabin"></div>
<div class="cabin"></div>
<div class="cabin"></div>
<div class="cabin"></div>
</div>
</body>
</html>
```
```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);
background-color: yellow;
}
50% {
background-color: purple;
}
100% {
transform: rotate(-360deg);
}
}
--fcc-editable-region--
```