<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>图层</title>
    <style>
        span{
            color:red;
        }
        #CSS3D{
            width: 100px;
            height: 100px;
/*            background-color: blue;
*/            transform: rotateY(30deg) rotateX(-45deg);
        }
        #Zindex{
            /*position: absolute;
            top: 0;
            left:0;*/
            width: 150px;
            height: 100px;
            z-index: 100;
/*            background-color: yellow;
*/        }
        #WillChange{
            will-change: transform;
/*            background-color: green;
*/        }
        #Opacity{
            width: 150px;
            height: 100px;
/*            background-color: #ccc;
*/            opacity: 0.5;
        }

        #Isolation{
/*            background-color: pink;
*/            isolation: isolate;
        }
        #Filter{
/*            background-color: grey;
*/            filter: 0.5;
        }

    </style>
</head>
<body>
    <div id="Zindex"> 
        position:absolute z-index:100 
        <span>✕</span>
    </div>

    <div id="CSS3D">
        3DCSS（即transform） rotate<span>✅</span>
        <div id="Zindex"> 
        复合层的 z-index:100 
        <span>✕</span>
    </div>
    </div>


    <br /><br /><br /><br /><br />

    <div id="CSS3D">
        3DCSS（即transform） rotate<span>✅</span>
    </div>

    <div id="WillChange">
        will-change
        <span>✅</span>
    </div>

    <div id="Opacity">
        opacity
        <span>✕</span>
    </div>

    <div id="Isolation">
        isolation
        <span>✕</span>
    </div>

    <div id="Filter">
        filter
        <span>✕</span>
    </div>




    <script>
        let root = document.getElementById('root');
        let count = 0;
        while(count < 100){
            count++;
            console.log(1)
        }

    </script>
</body>
</html>

 

 

 

HTML层次结构 实验_html