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<title>猫爪不能在下，页脚不能在上</title>
<style>
*{
margin:0;
padding:0;
border:0;
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body{
background: skyblue;
text-align: right;
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nav{
background: black;
color:white;
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button{
background: green;
font-size: 1em;
width:100px;
height:35px;
cursor:pointer;
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h1,h2,h3{padding:10px;}
pre{
position:fixed;
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z-index:2;
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pre > style{
display:block;
padding:10px 10px 10px;
background:rgba(255,255,255,.7);
z-index:2;
}
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background: lightgray;
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<style type="text/css">#yddContainer{display:block;font-family:Microsoft YaHei;position:relative;width:100%;height:100%;top:-4px;left:-4px;font-size:12px;border:1px solid}#yddTop{display:block;height:22px}#yddTopBorderlr{display:block;position:static;height:17px;padding:2px 28px;line-height:17px;font-size:12px;color:#5079bb;font-weight:bold;border-style:none solid;border-width:1px}#yddTopBorderlr .ydd-sp{position:absolute;top:2px;height:0;overflow:hidden}.ydd-icon{left:5px;width:17px;padding:0px 0px 0px 0px;padding-top:17px;background-position:-16px -44px}.ydd-close{right:5px;width:16px;padding-top:16px;background-position:left -44px}#yddKeyTitle{float:left;text-decoration:none}#yddMiddle{display:block;margin-bottom:10px}.ydd-tabs{display:block;margin:5px 0;padding:0 5px;height:18px;border-bottom:1px solid}.ydd-tab{display:block;float:left;height:18px;margin:0 5px -1px 0;padding:0 4px;line-height:18px;border:1px solid;border-bottom:none}.ydd-trans-container{display:block;line-height:160%}.ydd-trans-container a{text-decoration:none;}#yddBottom{position:absolute;bottom:0;left:0;width:100%;height:22px;line-height:22px;overflow:hidden;background-position:left -22px}.ydd-padding010{padding:0 10px}#yddWrapper{color:#252525;z-index:10001;background:url(chrome-extension://eopjamdnofihpioajgfdikhhbobonhbb/ab20.png);}#yddContainer{background:#fff;border-color:#4b7598}#yddTopBorderlr{border-color:#f0f8fc}#yddWrapper .ydd-sp{background-image:url(chrome-extension://eopjamdnofihpioajgfdikhhbobonhbb/ydd-sprite.png)}#yddWrapper a,#yddWrapper a:hover,#yddWrapper a:visited{color:#50799b}#yddWrapper .ydd-tabs{color:#959595}.ydd-tabs,.ydd-tab{background:#fff;border-color:#d5e7f3}#yddBottom{color:#363636}#yddWrapper{min-width:250px;max-width:400px;}</style></head>
<body>
<pre><style contenteditable="true">
/* 猫爪不能在下，页脚不能在上 */
/* 这是样式，可直接编辑 */
/* @footerHeight:100px; */
html{
height:100%;
}
body{
position: relative;
box-sizing:border-box;
min-height: 100%;
padding-bottom: 100px;
}
footer{
position: absolute;
bottom: 0;
width: 100%;
height: 100px;
}
</style>
<button onclick="main.innerHTML += main.innerHTML;">点击增加正文</button> <button onclick="main.innerHTML = main.innerHTML.slice(0,Math.max(19,main.innerHTML.length/2));">点击减少正文</button>
</pre>
<nav>
<h2>我是页头，我就是在上面</h2>
</nav>
<main>
<h1>猫爪不能在下，页脚不能在上</h1>
<div id="main">
<p>我是正文，我内容忽多忽少</p>
</div>
</main>
<footer>
<h2>我是页脚，我不能离开下面</h2>
</footer>
</body></html>
demo:
http://yuanoook.com/file?hash=f410da66e0c121f0a44a6aeea4ad33d9
时间： 2024-11-08 21:25:10