極客書

CSS3 - Animation

動畫是一個用元素改變形狀和創造運動的過程。

@keyframes

關鍵幀將控制CSS3中的中間動畫步驟。

Example of key frames with left animation −

@keyframes animation {
   from {background-color: pink;}
   to {background-color: green;}
}
div {
   width: 100px;
   height: 100px;
   background-color: red;
   animation-name: animation;
   animation-duration: 5s;
}

上面的示例使用關鍵幀語法顯示動畫的高度、寬度、顏色、名稱和持續時間。

Moving left animation

Live Demo 
<html>
   <head>
      <style type = "text/css">
         h1 {
            -moz-animation-duration: 3s;
            -webkit-animation-duration: 3s;
            -moz-animation-name: slidein;
            -webkit-animation-name: slidein;
         }
         @-moz-keyframes slidein {
            from {
               margin-left:100%;
               width:300%
            }
            to {
               margin-left:0%;
               width:100%;
            }
         }
         @-webkit-keyframes slidein {
            from {
               margin-left:100%;
               width:300%
            }
            to {
               margin-left:0%;
               width:100%;
            }
         }
      </style>
   </head>

   <body>
      <h1>Tutorials Point</h1>
      <p>this is an example of moving left animation .</p>
      <button onclick = "myFunction()">Reload page</button>
      <script>
         function myFunction() {
            location.reload();
         }
      </script>
   </body>
</html>

它將產生以下結果&負;

Moving left animation with keyframes

Live Demo 
<html>
   <head>
      <style type = "text/css">
         h1 {
            -moz-animation-duration: 3s;
            -webkit-animation-duration: 3s;
            -moz-animation-name: slidein;
            -webkit-animation-name: slidein;
         }
         @-moz-keyframes slidein {
            from {
               margin-left:100%;
               width:300%
            }
            75% {
               font-size:300%;
               margin-left:25%;
               width:150%;
            }
            to {
               margin-left:0%;
               width:100%;
            }
         }
         @-webkit-keyframes slidein {
            from {
               margin-left:100%;
               width:300%
            }
            75% {
               font-size:300%;
               margin-left:25%;
               width:150%;
            }
            to {
               margin-left:0%;
               width:100%;
            }
         }
      </style>
   </head>

   <body>
      <h1>Tutorials Point</h1>
      
      <p>This is an example of animation left with an extra keyframe 
         to make text changes.</p>
      <button onclick = "myFunction()">Reload page</button>
      <script>
         function myFunction() {
            location.reload();
         }
      </script>
   </body>
</html>

它將產生以下結果&負;