182 lines
		
	
	
		
			3.7 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
			
		
		
	
	
			182 lines
		
	
	
		
			3.7 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
| ---
 | |
| id: 587d78a8367417b2b2512ae4
 | |
| title: Haz latir un corazón con CSS usando un recuento de animación infinita
 | |
| challengeType: 0
 | |
| videoUrl: 'https://scrimba.com/c/cDZpDUr'
 | |
| forumTopicId: 301062
 | |
| dashedName: make-a-css-heartbeat-using-an-infinite-animation-count
 | |
| ---
 | |
| 
 | |
| # --description--
 | |
| 
 | |
| Aquí hay un ejemplo más de animación con la propiedad `animation-iteration-count` que usa el corazón que diseñaste en un desafío anterior.
 | |
| 
 | |
| La animación del latido de un segundo consta de dos piezas animadas. Los elementos `heart` (incluyendo las piezas `:before` y `:after`) se animan para cambiar el tamaño usando la propiedad `transform`, y el fondo `div` se anima para cambiar su color usando la propiedad `background`.
 | |
| 
 | |
| # --instructions--
 | |
| 
 | |
| Mantén el corazón latiendo agregando la propiedad `animation-iteration-count` tanto para la clase `back` como para la clase `heart` y estableciendo el valor en `infinite`. Los selectores `heart:before` y `heart:after` no necesitan ninguna propiedad de animación.
 | |
| 
 | |
| # --hints--
 | |
| 
 | |
| La propiedad `animation-iteration-count` para la clase `heart` debe tener un valor de `infinite`.
 | |
| 
 | |
| ```js
 | |
| assert($('.heart').css('animation-iteration-count') == 'infinite');
 | |
| ```
 | |
| 
 | |
| La propiedad `animation-iteration-count` para la clase `back` debe tener un valor de `infinite`.
 | |
| 
 | |
| ```js
 | |
| assert($('.back').css('animation-iteration-count') == 'infinite');
 | |
| ```
 | |
| 
 | |
| # --seed--
 | |
| 
 | |
| ## --seed-contents--
 | |
| 
 | |
| ```html
 | |
| <style>
 | |
|   .back {
 | |
|     position: fixed;
 | |
|     padding: 0;
 | |
|     margin: 0;
 | |
|     top: 0;
 | |
|     left: 0;
 | |
|     width: 100%;
 | |
|     height: 100%;
 | |
|     background: white;
 | |
|     animation-name: backdiv;
 | |
|     animation-duration: 1s;
 | |
| 
 | |
|   }
 | |
| 
 | |
|   .heart {
 | |
|     position: absolute;
 | |
|     margin: auto;
 | |
|     top: 0;
 | |
|     right: 0;
 | |
|     bottom: 0;
 | |
|     left: 0;
 | |
|     background-color: pink;
 | |
|     height: 50px;
 | |
|     width: 50px;
 | |
|     transform: rotate(-45deg);
 | |
|     animation-name: beat;
 | |
|     animation-duration: 1s;
 | |
| 
 | |
|   }
 | |
|   .heart:after {
 | |
|     background-color: pink;
 | |
|     content: "";
 | |
|     border-radius: 50%;
 | |
|     position: absolute;
 | |
|     width: 50px;
 | |
|     height: 50px;
 | |
|     top: 0px;
 | |
|     left: 25px;
 | |
|   }
 | |
|   .heart:before {
 | |
|     background-color: pink;
 | |
|     content: "";
 | |
|     border-radius: 50%;
 | |
|     position: absolute;
 | |
|     width: 50px;
 | |
|     height: 50px;
 | |
|     top: -25px;
 | |
|     left: 0px;
 | |
|   }
 | |
| 
 | |
|   @keyframes backdiv {
 | |
|     50% {
 | |
|       background: #ffe6f2;
 | |
|     }
 | |
|   }
 | |
| 
 | |
|   @keyframes beat {
 | |
|     0% {
 | |
|       transform: scale(1) rotate(-45deg);
 | |
|     }
 | |
|     50% {
 | |
|       transform: scale(0.6) rotate(-45deg);
 | |
|     }
 | |
|   }
 | |
| 
 | |
| </style>
 | |
| <div class="back"></div>
 | |
| <div class="heart"></div>
 | |
| ```
 | |
| 
 | |
| # --solutions--
 | |
| 
 | |
| ```html
 | |
| <style>
 | |
|   .back {
 | |
|     position: fixed;
 | |
|     padding: 0;
 | |
|     margin: 0;
 | |
|     top: 0;
 | |
|     left: 0;
 | |
|     width: 100%;
 | |
|     height: 100%;
 | |
|     background: white;
 | |
|     animation-name: backdiv;
 | |
|     animation-duration: 1s;
 | |
|     animation-iteration-count: infinite;
 | |
|   }
 | |
| 
 | |
|   .heart {
 | |
|     position: absolute;
 | |
|     margin: auto;
 | |
|     top: 0;
 | |
|     right: 0;
 | |
|     bottom: 0;
 | |
|     left: 0;
 | |
|     background-color: pink;
 | |
|     height: 50px;
 | |
|     width: 50px;
 | |
|     transform: rotate(-45deg);
 | |
|     animation-name: beat;
 | |
|     animation-duration: 1s;
 | |
|     animation-iteration-count: infinite;
 | |
|   }
 | |
|   .heart:after {
 | |
|     background-color: pink;
 | |
|     content: "";
 | |
|     border-radius: 50%;
 | |
|     position: absolute;
 | |
|     width: 50px;
 | |
|     height: 50px;
 | |
|     top: 0px;
 | |
|     left: 25px;
 | |
|   }
 | |
|   .heart:before {
 | |
|     background-color: pink;
 | |
|     content: "";
 | |
|     border-radius: 50%;
 | |
|     position: absolute;
 | |
|     width: 50px;
 | |
|     height: 50px;
 | |
|     top: -25px;
 | |
|     left: 0px;
 | |
|   }
 | |
| 
 | |
|   @keyframes backdiv {
 | |
|     50% {
 | |
|       background: #ffe6f2;
 | |
|     }
 | |
|   }
 | |
| 
 | |
|   @keyframes beat {
 | |
|     0% {
 | |
|       transform: scale(1) rotate(-45deg);
 | |
|     }
 | |
|     50% {
 | |
|       transform: scale(0.6) rotate(-45deg);
 | |
|     }
 | |
|   }
 | |
| </style>
 | |
| <div class="back"></div>
 | |
| <div class="heart"></div>
 | |
| ```
 |