我有以下页面(deadlink: http://www.workingstorage.com/Sample.htm)，有一个脚注，我不能坐在页面的底部。
我想让页脚
当页面较短且屏幕未被填充时，坚持在窗口底部 当有超过一个屏幕的内容时，保持在文档末尾，并像往常一样向下移动(而不是重叠内容)。
CSS是继承的，让我困惑。我似乎不能正确地改变它，把一个最小高度的内容或使页脚到底部。
当前回答
一个非常简单的弹性解决方案，不需要固定的高度或改变元素的位置。
HTML
<div class="container">
<header></header>
<main></main>
<footer></footer>
</div>
CSS
.container {
display: flex;
flex-direction: column;
min-height: 100vh;
}
main {
flex: 1;
}
浏览器支持
所有主流浏览器，除了IE11及以下版本。
确保使用Autoprefixer适当的前缀。
.container { display: -webkit-box; display: -ms-flexbox; display: flex; -webkit-box-orient: vertical; -webkit-box-direction: normal; -ms-flex-direction: column; flex-direction: column; min-height: 100vh; } main { -webkit-box-flex: 1; -ms-flex: 1; flex: 1; } ///////////////////////////////////////////// body, html { margin: 0; padding: 0; } header, main, footer { margin: 0; display: block; } header, footer { min-height: 80px; } header { background-color: #ccc; } main { background-color: #f4f4f4; } footer { background-color: orange; } <div class="container"> <header></header> <main></main> <footer></footer> </div>
其他回答
这就是我解决同样问题的方法
html { height: 100%; box-sizing: border-box; } *, *:before, *:after { box-sizing: inherit; } body { position: relative; margin: 0; padding-bottom: 6rem; min-height: 100%; font-family: "Helvetica Neue", Arial, sans-serif; } .demo { margin: 0 auto; padding-top: 64px; max-width: 640px; width: 94%; } .footer { position: absolute; right: 0; bottom: 0; left: 0; padding: 1rem; background-color: #efefef; text-align: center; } <div class="demo"> <h1>CSS “Always on the bottom” Footer</h1> <p>I often find myself designing a website where the footer must rest at the bottom of the page, even if the content above it is too short to push it to the bottom of the viewport naturally.</p> <p>However, if the content is taller than the user’s viewport, then the footer should disappear from view as it would normally, resting at the bottom of the page (not fixed to the viewport).</p> <p>If you know the height of the footer, then you should set it explicitly, and set the bottom padding of the footer’s parent element to be the same value (or larger if you want some spacing).</p> <p>This is to prevent the footer from overlapping the content above it, since it is being removed from the document flow with <code>position: absolute; </code>.</p> </div> <div class="footer">This footer will always be positioned at the bottom of the page, but <strong>not fixed</strong>.</div>
从IE7开始，你可以简单地使用
#footer {
position:fixed;
bottom:0;
}
参见caniuse寻求支持。
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" type="text/css" href="main.css" />
</head>
<body>
<div id="page-container">
<div id="content-wrap">
<!-- all other page content -->
</div>
<footer id="footer"></footer>
</div>
</body>
</html>
#page-container {
position: relative;
min-height: 100vh;
}
#content-wrap {
padding-bottom: 2.5rem; /* Footer height */
}
#footer {
position: absolute;
bottom: 0;
width: 100%;
height: 2.5rem; /* Footer height */
}
这样做
<footer style="position: fixed; bottom: 0; width: 100%;"> </footer>
您还可以阅读flex，它被所有现代浏览器所支持
更新:我读过flex并尝试过。这对我很管用。希望你也能这样。以下是我的实现方法。这里main不是ID，而是div
body {
margin: 0;
display: flex;
min-height: 100vh;
flex-direction: column;
}
main {
display: block;
flex: 1 0 auto;
}
在这里你可以阅读更多关于flex https://css-tricks.com/snippets/css/a-guide-to-flexbox/
请记住，旧版本的IE不支持它。
你需要使用position: absolute;这很重要，下面是0
.footer {
position: absolute;
bottom: 0;
left: 0;
right: 0;
}
