html5标签

html5 新增加了header nav footer section article aside标签

<audio controls="controls" autoplay="autoplay" loop="loop">

　　<source src="xx.mp3" type="audio/mp3">

       <source src="xx.ogg" type="audio/mpeg">

</audio>

<video controls="controls" autoplay="autoplay" loop="loop" muted="muted">

　　<source src="xx.mp4" type="video/mp4">

       <source src="xx.ogg" type="aideo/ogg">

</video>

   <input type="url" placeholder="aa" autofocus="autofocus" autocomplete="on" multiple="multiple" required>

input type类型：email url number date month time week tel search color 属性：placeholder autofocus autocomplete multiple required

属性选择器 类选择器 伪类选择器权重都是10    button[name] button[name^=""] button[name$=""] button[name*=""] 

 transform:translate(w,h) 移动 rotate(45deg) 旋转 scale(W倍数，H倍数）

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .div1 {
            width: 700px;
            height: 700px;
            background-color: green;
            position: relative
        }
        
        .div2 {
            position: absolute;
            top: 50%;
            left: 50%;
            width: 300px;
            height: 300px;
            /* margin-top: -150px;
            margin-left: -150px; */
            transform: translate(-50%, -50%);
            transform: rotate(45deg);
            background-color: red;
        }
        
        .san {
            width: 10px;
            height: 10px;
            border-top: 1px solid;
            border-right: 1px solid;
            transform: rotate(45deg);
            transition: all 1s;
        }
        
        .san:hover {
            transform: rotate(135deg);
        }
        
        .par {
            width: 200px;
            height: 200px;
            border: 1px solid;
            margin: 100px auto;
            overflow: hidden;
        }
        
        .par::before {
            content: "您好";
            display: block;
            width: 100%;
            height: 100%;
            color: green;
            background-color: red;
            transform-origin: left bottom;
            transform: rotate(180deg);
            transition: all 1s;
        }
        
        .par:hover::before {
            transform: rotate(0deg)
        }
        
        img {
            transition: all 1s;
        }
        
        img:hover {
            transform: scale(2, 2)
        }
        
        ul {
            list-style: none;
        }
        
        ul li {
            float: left;
            width: 30px;
            height: 30px;
            line-height: 30px;
            border: 1px solid pink;
            border-radius: 50%;
            transition: all 1s;
            margin: 10px;
            text-align: center;
        }
        
        ul li:hover {
            transform: scale(2, 2);
        }
    </style>
</head>

<body>
    <!-- <div class="div1">
        <div class="div2"></div>
    </div> -->
    <!-- <div class="par">

    </div> -->
    <ul>
        <li>1</li>
        <li>2</li>
        <li>3</li>
        <li>4</li>
        <li>5</li>
        <li>6</li>
        <li>7</li>
    </ul>
</body>

</html>

　　

posted @ 2020-04-08 15:02  howhy  阅读(67)  评论(0)    收藏  举报