CSS 网格布局(Grid)
Header
Menu
Main
Right
Footer
代码如下:
<!DOCTYPE html><html><head><style>.item1 { grid-area: header; }.item2 { grid-area: menu; }.item3 { grid-area: main; }.item4 { grid-area: right; }.item5 { grid-area: footer; }.grid-container {display: grid;grid-template-areas:'header header header header header header''menu main main main right right''menu footer footer footer footer footer';grid-gap: 10px;background-color: #2196F3;padding: 10px;}.grid-container > div {background-color: rgba(255, 255, 255, 0.8);text-align: center;padding: 20px 0;font-size: 30px;}</style></head><body><h2>Grid 布局</h2><p>此网格布局包含六列和三行:</p><div class="grid-container"><div class="item1">Header</div><div class="item2">Menu</div><div class="item3">Main</div><div class="item4">Right</div><div class="item5">Footer</div></div></body></html>
网格布局
CSS 网格布局模块(CSS Grid Layout Module)提供了带有行和列的基于网格的布局系统,它使网页设计变得更加容易,而无需使用浮动和定位。
浏览器支持
所有现代浏览器均支持网格属性。
| 57.0 | 16.0 | 52.0 | 10 | 44 |
网格元素
网格布局由一个父元素以及一个或多个子元素组成:
<div class="grid-container"><div class="grid-item">1</div><div class="grid-item">2</div><div class="grid-item">3</div><div class="grid-item">4</div><div class="grid-item">5</div><div class="grid-item">6</div><div class="grid-item">7</div><div class="grid-item">8</div><div class="grid-item">9</div></div>
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Display 属性
当 HTML 元素的 display 属性设置为 grid 或 inline-grid 时,它就会成为网格容器。
实例1
<!DOCTYPE html><html><head><style>.grid-container {display: grid;grid-template-columns: auto auto auto;background-color: #2196F3;padding: 10px;}.grid-item {background-color: rgba(255, 255, 255, 0.8);border: 1px solid rgba(0, 0, 0, 0.8);padding: 20px;font-size: 30px;text-align: center;}</style></head><body><h2>display 属性:</h2><div class="grid-container"><div class="grid-item">1</div><div class="grid-item">2</div><div class="grid-item">3</div><div class="grid-item">4</div><div class="grid-item">5</div><div class="grid-item">6</div><div class="grid-item">7</div><div class="grid-item">8</div><div class="grid-item">9</div></div><p>请将 <em>display</em> 属性设置为 <em>grid</em>,以生成块级的网格容器。</p></body></html>
实例2
<!DOCTYPE html><html><head><style>.grid-container {display: inline-grid;grid-template-columns: auto auto auto;background-color: #2196F3;padding: 10px;}.grid-item {background-color: rgba(255, 255, 255, 0.8);border: 1px solid rgba(0, 0, 0, 0.8);padding: 20px;font-size: 30px;text-align: center;}</style></head><body><h2>display 属性:</h2><div class="grid-container"><div class="grid-item">1</div><div class="grid-item">2</div><div class="grid-item">3</div><div class="grid-item">4</div><div class="grid-item">5</div><div class="grid-item">6</div><div class="grid-item">7</div><div class="grid-item">8</div><div class="grid-item">9</div></div><p>请将 <em>display</em> 属性设置为 <em>inline-grid</em>,以生成行内的网格容器。</p></body></html>
网格容器的所有直接子元素将自动成为网格项目。
网格列(Grid Columns)
网格项的垂直线被称为列。

网隔行(Grid Rows)
网格项的水平线被称为行。

网格间隙(Grid Gaps)
每列/行之间的间隔称为间隙。

您可以通过使用以下属性之一来调整间隙大小:
- grid-column-gap
- grid-row-gap
- grid-gap
实例1
grid-column-gap 属性设置列之间的间隙:
<!DOCTYPE html><html><head><style>.grid-container {display: grid;grid-column-gap: 50px;grid-template-columns: auto auto auto;background-color: #2196F3;padding: 10px;}.grid-item {background-color: rgba(255, 255, 255, 0.8);border: 1px solid rgba(0, 0, 0, 0.8);padding: 20px;font-size: 30px;text-align: center;}</style></head><body><h2>grid-column-gap 属性:</h2><div class="grid-container"><div class="grid-item">1</div><div class="grid-item">2</div><div class="grid-item">3</div><div class="grid-item">4</div><div class="grid-item">5</div><div class="grid-item">6</div><div class="grid-item">7</div><div class="grid-item">8</div><div class="grid-item">9</div></div><p>请使用 <em>grid-column-gap</em> 属性调整列之间的空间。</p></body></html>
实例2
grid-row-gap 属性设置行之间的间隙:
<!DOCTYPE html><html><head><style>.grid-container {display: grid;grid-row-gap: 50px;grid-template-columns: auto auto auto;background-color: #2196F3;padding: 10px;}.grid-item {background-color: rgba(255, 255, 255, 0.8);border: 1px solid rgba(0, 0, 0, 0.8);padding: 20px;font-size: 30px;text-align: center;}</style></head><body><h2>grid-row-gap 属性:</h2><div class="grid-container"><div class="grid-item">1</div><div class="grid-item">2</div><div class="grid-item">3</div><div class="grid-item">4</div><div class="grid-item">5</div><div class="grid-item">6</div><div class="grid-item">7</div><div class="grid-item">8</div><div class="grid-item">9</div></div><p>请使用 <em>grid-row-gap</em> 属性来调整行间距。</p></body></html>
实例3
grid-gap 属性是 grid-row-gap 和 grid-column-gap 属性的简写属性:
<!DOCTYPE html><html><head><style>.grid-container {display: grid;grid-gap: 50px 100px;grid-template-columns: auto auto auto;background-color: #2196F3;padding: 10px;}.grid-item {background-color: rgba(255, 255, 255, 0.8);border: 1px solid rgba(0, 0, 0, 0.8);padding: 20px;font-size: 30px;text-align: center;}</style></head><body><h2>grid-gap 属性:</h2><div class="grid-container"><div class="grid-item">1</div><div class="grid-item">2</div><div class="grid-item">3</div><div class="grid-item">4</div><div class="grid-item">5</div><div class="grid-item">6</div><div class="grid-item">7</div><div class="grid-item">8</div><div class="grid-item">9</div></div><p>请使用 <em>grid-gap</em> 属性来调整列<em>和</em>行之间的空间。</p></body></html>
实例4
grid-gap 属性还可用于将行间隙和列间隙设置为一个值:
<!DOCTYPE html><html><head><style>.grid-container {display: grid;grid-gap: 50px;grid-template-columns: auto auto auto;background-color: #2196F3;padding: 10px;}.grid-item {background-color: rgba(255, 255, 255, 0.8);border: 1px solid rgba(0, 0, 0, 0.8);padding: 20px;font-size: 30px;text-align: center;}</style></head><body><h2>grid-gap 属性:</h2><div class="grid-container"><div class="grid-item">1</div><div class="grid-item">2</div><div class="grid-item">3</div><div class="grid-item">4</div><div class="grid-item">5</div><div class="grid-item">6</div><div class="grid-item">7</div><div class="grid-item">8</div><div class="grid-item">9</div></div><p>请使用 <em>grid-gap</em> 属性来调整列<em>和</em>行之间的空间。</p></body></html>
网格行(Grid Lines)
列之间的线称为列线(column lines)。行之间的线称为行线(row lines)。

当把网格项目放在网格容器中时,请引用行号:
实例1
把网格项目放在列线 1,并在列线 3 结束它:
<!DOCTYPE html><html><head><style>.grid-container {display: grid;grid-template-columns: auto auto auto;grid-gap: 10px;background-color: #2196F3;padding: 10px;}.grid-container > div {background-color: rgba(255, 255, 255, 0.8);text-align: center;padding: 20px 0;font-size: 30px;}.item1 {grid-column-start: 1;grid-column-end: 3;}</style></head><body><h2>网格行</h2><div class="grid-container"><div class="item1">1</div><div class="item2">2</div><div class="item3">3</div><div class="item4">4</div><div class="item5">5</div><div class="item6">6</div><div class="item7">7</div><div class="item8">8</div></div><p>您可以在放置网格项时引用行号。</p></body></html>
实例2
把网格项目放在行线 1,并在行线 3 结束它:
<!DOCTYPE html><html><head><style>.grid-container {display: grid;grid-template-columns: auto auto auto;grid-gap: 10px;background-color: #2196F3;padding: 10px;}.grid-container > div {background-color: rgba(255, 255, 255, 0.8);text-align: center;padding: 20px 0;font-size: 30px;}.item1 {grid-row-start: 1;grid-row-end: 3;}</style></head><body><h2>网格行</h2><div class="grid-container"><div class="item1">1</div><div class="item2">2</div><div class="item3">3</div><div class="item4">4</div><div class="item5">5</div><div class="item6">6</div><div class="item7">7</div><div class="item8">8</div></div><p>您可以在放置网格项时引用行号。</p></body></html>
所有 CSS Grid 属性
| 属性 | 描述 |
|---|---|
| column-gap | 指定列之间的间距 |
| gap | row-gap 与 column-gap 的简写属性 |
| grid | grid-template-rows,grid-template-columns, grid-template-areas, grid-auto-rows, grid-auto-columns, 和 grid-auto-flow 的简写属性 |
| grid-area | 为网格项目指定一个名称, 或者是 grid-row-start, grid-column-start, grid-row-end, 与 grid-column-end 的简写属性 |
| grid-auto-columns | 指定默认列大小 |
| grid-auto-flow | 指定如何在网格中插入自动放置的项 |
| grid-auto-rows | 指定默认行大小 |
| grid-column | 指定 grid-column-start 与 grid-column-end 的简写属性 |
| grid-column-end | 指定网格项的结束位置 |
| grid-column-gap | 指定列之间间隙的大小 |
| grid-column-start | 指定网格项从何处开始 |
| grid-gap | A shorthand property for the grid-row-gap and grid-column-gap properties |
| grid-row | 指定 grid-row-start 与 grid-row-end 的简写属性 |
| grid-row-end | 指定网格项的结束位置 |
| grid-row-gap | 指定行间距的大小 |
| grid-row-start | 指定网格项从何处开始 |
| grid-template | 指定 grid-template-rows, grid-template-columns 与 grid-areas 的简写属性 |
| grid-template-areas | 指定如何使用命名网格项显示列和行 |
| grid-template-columns | 指定列的大小,以及网格布局中的列数 |
| grid-template-rows | 指定网格布局中行的大小 |
| row-gap | 指定网格行之间的间距 |