CSS 九宫格
公共 CSS 属性
.square{
position: relative;
width: 100%;
height: 0;
padding-bottom: 100%; /* padding百分比是相对父元素宽度计算的 */
margin-bottom: 30px;
}
.square-inner{
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%; /* 铺满父元素容器,这时候宽高就始终相等了 */
}
.square-inner>li{
width: calc(98% / 3); /* calc里面的运算符两边要空格 */
height: calc(98% / 3);
margin-right: 1%;
margin-bottom: 1%;
overflow: hidden;
}
FlexBox
HTML:
<div class="square">
<ul class="square-inner flex">
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
<li>7</li>
<li>8</li>
<li>9</li>
</ul>
</div>
CSS:
.flex {
display: flex;
flex-wrap: wrap;
}
.flex > li{
flex-grow: 1; /* 子元素按1/n的比例进行拉伸 */
background-color: #4d839c;
text-align: center;
color: #fff;
font-size: 50px;
line-height: 2;
}
.flex > li:nth-of-type(3n) { /* 选择个数是3的倍数的元素 */
margin-right: 0;
}
.flex > li:nth-of-type(n+7) { /* 选择倒数的三个元素,n可以取0 */
margin-bottom: 0;
}
Grid
HTML
<div class="square">
<div class="square-inner grid">
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
<div>6</div>
<div>7</div>
<div>8</div>
<div>9</div>
</div>
</div>
CSS
.grid {
display: grid;
grid-template-columns: repeat(3, 1fr); /* 相当于 1fr 1fr 1fr */
grid-template-rows: repeat(3, 1fr); /* fr单位可以将容器分为几等份 */
grid-gap: 1%; /* grid-column-gap 和 grid-row-gap的简写 */
grid-auto-flow: row;
}
.grid > div {
color: #fff;
font-size: 50px;
line-height: 2;
text-align: center;
background: linear-gradient(to bottom, #f5f6f6 0%,#dbdce2 21%,#b8bac6 49%,#dddfe3 80%,#f5f6f6 100%);
}
Float
HTML
<div class="square">
<ul class="square-inner float">
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
<li>7</li>
<li>8</li>
<li>9</li>
</ul>
</div>
CSS
.float::after {
content: "";
display: block;
clear: both;
visibility: hidden;
}
.float > li {
float: left;
background-color: #42a59f;
text-align: center;
color: #fff;
font-size: 50px;
line-height: 2;
}
.float > li:nth-of-type(3n) {
margin-right: 0;
}
.float > li:nth-of-type(n+7) {
margin-bottom: 0;
}
Table
HTML
<div class="square">
<table class="square-inner table">
<tbody>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
</tr>
<tr>
<td>4</td>
<td>5</td>
<td>6</td>
</tr>
<tr>
<td>7</td>
<td>8</td>
<td>9</td>
</tr>
</tbody>
</table>
</div>
CSS
.table {
border-collapse: separate;
border-spacing: 0.57em;
font-size: 14px;
empty-cells: hide;
table-layout: fixed;
}
.table > tbody > tr > td {
text-align: center;
background-color: #889esd8;
overflow: hidden;
}