CSS - 向下弹跳效果

描述

反弹动画效果用于在元素撞击表面后快速向上、向后或远离表面移动。

语法

@keyframes bounceOut {
   0% {
      transform: scale(1);
   }
   25% {
      transform: scale(.95);
   }
   50% {
      opacity: 1;
      transform: scale(1.1);
   }
   100% {
      opacity: 0;
      transform: scale(.3);
   } 
}

参数

transform − transform 将 2d 和 3d 变换应用于元素。
opacity − opacity 应用于元素以使其半透明。

示例

在线演示

<html>
   <head>
      <style>
         .animated {
            background-image: url(/css/images/logo.png);
            background-repeat: no-repeat;
            background-position: left top;
            padding-top:95px;
            margin-bottom:60px;
            -webkit-animation-duration: 10s;
            animation-duration: 10s;
            -webkit-animation-fill-mode: both;
            animation-fill-mode: both;
         }
         
         @-webkit-keyframes bounceOutDown {
            0% {
               -webkit-transform: translateY(0);
            }
            20% {
               opacity: 1;
               -webkit-transform: translateY(-20px);
            }
            100% {
               opacity: 0;
               -webkit-transform: translateY(2000px);
            }
         }
         
         @keyframes bounceOutDown {
            0% {
               transform: translateY(0);
            }
            20% {
               opacity: 1;
               transform: translateY(-20px);
            }
            100% {
               opacity: 0;
               transform: translateY(2000px);
            }
         }
         
         .bounceOutDown {
            -webkit-animation-name: bounceOutDown;
            animation-name: bounceOutDown;
         }
      </style>
   </head>

   <body>
   
      <div id = "animated-example" class = "animated bounceOutDown"></div>
      <button onclick = "myFunction()">Reload page</button>
      
      <script>
         function myFunction() {
            location.reload();
         }
      </script>
      
   </body>
</html>

输出

它将产生以下结果：

css_animation.htm

打印页面