Sticky Footer 粘性底部-让底部一直在页面最下面

具体实例页面请看github

方法一：footer绝对定位-并加一层父元素

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        *{
            margin:0;
            padding:0;
            box-sizing: border-box;
        }
        html,body{
            height: 100%;
            /*min-height: 100%;*/
            min-width: 1200px;
        }
        body{
            font: 14px/1.5 "Microsoft YaHei", sans-serif;
            color: #666666;
            background: #e8e8e8;
        }
        .body{
            position: relative;
            min-height: 100%;
            height:auto !important;
            height:100%;//IE6不识别min-height
        }
        .header{
            width: 100%;
            background-color: #f1a899;
            height: 64px;
            box-shadow: 0 0 0 transparent, 0 0 0 transparent, 0 4px 8px #DFDFDF, 0 0 0 transparent;
        }
        .section{
            width: 1200px;
            margin: 0 auto;
            padding: 30px 0 145px;
        }
        .container{
            background: #ffffff;
            height:500px;
        }
        .footer{
            position: absolute;
            bottom: 0;
            height: 95px;
            width: 100%;
            background: #858B9A;
        }
    </style>
</head>
<body>
<div class="body">
    <div class="header">
        header页面头部
    </div>
    <div class="section">
        <div class="container">
            页面主体内容
        </div>
    </div>
    <div class="footer">
        footer页面底部
    </div>
</div>
</body>
</html>

方法二：foote绝对定位-以body为父元素

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        *{
            margin:0;
            padding:0;
            box-sizing: border-box;
        }
        html{
            height: 100%;
            min-height: 100%;
            min-width: 1200px;
        }
        body{
            position: relative;
            font: 14px/1.5 "Microsoft YaHei", sans-serif;
            color: #666666;
            background: #e8e8e8;
            min-height:100%;
        }

        .header{
            width: 100%;
            background-color: #f1a899;
            height: 64px;
            box-shadow: 0 0 0 transparent, 0 0 0 transparent, 0 4px 8px #DFDFDF, 0 0 0 transparent;
        }
        .section{
            width: 1200px;
            margin: 0 auto;
            padding: 40px 0 140px;
        }
        .container{
            background: #ffffff;
            height:500px;
        }
        .footer{
            position: absolute;
            bottom: 0;
            height: 95px;
            width: 100%;
            background: #858B9A;
        }
    </style>
</head>
<body>
    <div class="header">
        header页面头部
    </div>
    <div class="section">
        <div class="container">
            页面主体内容
        </div>
    </div>
    <div class="footer">
        footer页面底部
    </div>
</body>
</html>

方法三：footer加负值上边距

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html, body {
            height: 100%;
            min-height: 100%;
            min-width: 1200px;
        }

        body {
            font: 14px/1.5 "Microsoft YaHei", sans-serif;
            color: #666666;
            background: #e8e8e8;
        }

        .header {
            width: 100%;
            background-color: #f1a899;
            height: 64px;
            box-shadow: 0 0 0 transparent, 0 0 0 transparent, 0 4px 8px #DFDFDF, 0 0 0 transparent;
        }

        .section {
            min-height: 100%;
            padding: 0 0 95px;
        }

        .container {
            width: 1200px;
            height: 500px;
            margin: 30px auto;
            background: #ffffff;
        }

        .footer {
            height: 95px;
            margin-top: -95px;
            width: 100%;
            background: #858B9A;
        }
    </style>
</head>
<body>

<div class="section">
    <div class="header">
        header页面头部
    </div>
    <div class="container">
        页面主体内容
    </div>
</div>

<div class="footer">
    footer页面底部
</div>
</body>
</html>

方法四：给section的高度用calc(100vh-footer.height)

calc()：是css3新增方法，pc端大部分支持ie9+，移动端大部分不支持
vh单位：相对于视窗的高度，视窗的高度是100vh

方法四用calc()函数算出高度，内容较少，小屏幕下如果出现横向滚动条，会影响纵向滚动条

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html, body {
            height: 100%;
            /*min-height: 100%;*/
            min-width: 1200px;
        }

        body {
            font: 14px/1.5 "Microsoft YaHei", sans-serif;
            color: #666666;
            background: #e8e8e8;
        }

        .header {
            width: 100%;
            background-color: #f1a899;
            height: 64px;
            box-shadow: 0 0 0 transparent, 0 0 0 transparent, 0 4px 8px #DFDFDF, 0 0 0 transparent;
        }

        .section {
            min-height: calc(100vh - 95px);
        }

        .container {
            width: 1200px;
            height: 500px;
            margin: 0 auto;
            background: #ffffff;
        }

        .footer {
            height: 95px;
            width: 100%;
            background: #858B9A;
        }
    </style>
</head>
<body>

<div class="section">
    <div class="header">
        header页面头部
    </div>
    <div class="container">
        页面主体内容
    </div>
</div>
<div class="footer">
    footer页面底部
</div>
</body>
</html>

方法五：用flexbox

flexbox对ie支持不太好

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            height: 100%;

            min-width: 1200px;
        }

        body {
            font: 14px/1.5 "Microsoft YaHei", sans-serif;
            color: #666666;
            background: #e8e8e8;
            min-height: 100%;
            display: flex;
            flex-direction: column;
        }

        .header {
            width: 100%;
            background-color: #f1a899;
            height: 64px;
            box-shadow: 0 0 0 transparent, 0 0 0 transparent, 0 4px 8px #DFDFDF, 0 0 0 transparent;
        }

        .section {
            flex:1;
            padding:30px 0;
        }
        .container {
            width: 1200px;
            height: 1000px;
            margin: 0 auto;
            background: #ffffff;
        }

        .footer {
            height: 95px;
            width: 100%;
            background: #858B9A;
        }
    </style>
</head>
<body>
<div class="header">
    header页面头部
</div>
<div class="section">

    <div class="container">
        页面主体内容
    </div>
</div>
<div class="footer">
    footer页面底部
</div>
</body>
</html>

本文转载于:猿2048➪https://www.mk2048.com/blog/blog.php?id=hak2i1ji1aa

方法一：footer绝对定位-并加一层父元素

方法二：foote绝对定位-以body为父元素

方法三：footer加负值上边距

方法四：给section的高度用calc(100vh-footer.height)

方法五：用flexbox

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