您正在寻找的是 CSS Sticky Footer 。
* {
margin: 0;
padding: 0;
}
html,
body {
height: 100%;
}
#wrap {
min-height: 100%;
}
#main {
overflow: auto;
padding-bottom: 180px;
/* must be same height as the footer */
}
#footer {
position: relative;
margin-top: -180px;
/* negative value of footer height */
height: 180px;
clear: both;
background-color: red;
}
/* Opera Fix thanks to Maleika (Kohoutec) */
body:before {
content: "";
height: 100%;
float: left;
width: 0;
margin-top: -32767px;
/* thank you Erik J - negate effect of float*/
}
<div id="wrap">
<div id="main"></div>
</div>
<div id="footer"></div>
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