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                            ## 概述
過度(transition)是css3中經常有顛覆性的特性之一.可以在不使用flash動畫或javascript的情況下,當元素從一種樣式變換為另一種樣式時為元素添加效果.
在css3里使用transition可以實現補間動畫(過度效果),并且當前元素只要有"屬性"發生變化時即存在兩種狀態(我們用A和B代指),就可以實現平滑的過渡.

```
    <style>
        div {
            height: 200px;
            width: 200px;
            background-color: pink;
            /*transition : 要過度的屬性 花費時間  運動曲線  何時開始*/
            transition: width .4s, height .2s;        //多屬性
        }

        div:hover {
            width: 400px;
            height: 400px;
        }
    </style>
</head>
<body>
<div></div>
</body>
```

                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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