# Sticky Footer
### 全局增加一个负值下边距等于底部高度
```markup
```
```css
html, body {
height: 100%;
margin: 0;
}
.wrapper {
min-height: 100%;
/* Equal to height of footer */
/* But also accounting for potential margin-bottom of last child */
margin-bottom: -50px;
}
.footer,
.push {
height: 50px;
}
```
## flex
```markup
content
```
```css
html {
height: 100%;
}
body {
min-height: 100%;
display: flex;
flex-direction: column;
}
.content {
flex: 1;
}
```
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