110 lines
3.2 KiB
Markdown
110 lines
3.2 KiB
Markdown
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---
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id: 587d78a8367417b2b2512ae6
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title: Animate Multiple Elements at Variable Rates
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localeTitle: Animar múltiples elementos a tasas variables
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challengeType: 0
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videoUrl: ''
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---
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## Description
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<section id='description'>
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En el desafío anterior, cambiaste las tasas de animación para dos elementos animados similares al modificar sus reglas <code>@keyframes</code> . Puede lograr el mismo objetivo manipulando la <code>animation-duration</code> de la <code>animation-duration</code> de varios elementos.
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En la animación que se ejecuta en el editor de código, hay tres "estrellas" en el cielo que brillan al mismo ritmo en un bucle continuo. Para hacerlos brillar a diferentes velocidades, puede establecer la propiedad de <code>animation-duration</code> la <code>animation-duration</code> en diferentes valores para cada elemento.
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</section>
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## Instructions
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<section id='instructions'>
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Establezca la <code>animation-duration</code> de la <code>animation-duration</code> de los elementos con las clases <code>star-1</code> , <code>star-2</code> y <code>star-3</code> en 1s, 0.9s y 1.1s, respectivamente.
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: La propiedad de <code>animation-duration</code> para la estrella con clase <code>star-1</code> debe permanecer en 1s.
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testString: 'assert($(".star-1").css("animation-duration") == "1s", "The <code>animation-duration</code> property for the star with class <code>star-1</code> should remain at 1s.");'
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- text: La propiedad de <code>animation-duration</code> para la estrella con clase <code>star-2</code> debe ser 0.9s.
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testString: 'assert($(".star-2").css("animation-duration") == "0.9s", "The <code>animation-duration</code> property for the star with class <code>star-2</code> should be 0.9s.");'
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- text: La propiedad de <code>animation-duration</code> para la estrella con clase <code>star-3</code> debe ser 1.1s.
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testString: 'assert($(".star-3").css("animation-duration") == "1.1s", "The <code>animation-duration</code> property for the star with class <code>star-3</code> should be 1.1s.");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='html-seed'>
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```html
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<style>
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.stars {
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background-color: white;
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height: 30px;
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width: 30px;
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border-radius: 50%;
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animation-iteration-count: infinite;
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}
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.star-1 {
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margin-top: 15%;
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margin-left: 60%;
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animation-duration: 1s;
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animation-name: twinkle;
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}
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.star-2 {
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margin-top: 25%;
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margin-left: 25%;
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animation-duration: 1s;
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animation-name: twinkle;
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}
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.star-3 {
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margin-top: 10%;
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margin-left: 50%;
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animation-duration: 1s;
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animation-name: twinkle;
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}
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@keyframes twinkle {
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20% {
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transform: scale(0.5);
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opacity: 0.5;
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}
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}
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#back {
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position: fixed;
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padding: 0;
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margin: 0;
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top: 0;
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left: 0;
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width: 100%;
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height: 100%;
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background: linear-gradient(black, #000099, #66c2ff, #ffcccc, #ffeee6);
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}
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</style>
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<div id="back"></div>
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<div class="star-1 stars"></div>
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<div class="star-2 stars"></div>
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<div class="star-3 stars"></div>
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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