最常用的 4 种居中方法
Youky ... 2023-5-9 Less than 1 minute
# 最常用的 4 种居中方法
<div class="container">
<div class="item"></div>
</div>
1
2
3
2
3
# 宽高未知
# flex 布局
.container {
display: flex;
justify-content: center;
align-items: center;
}
1
2
3
4
5
2
3
4
5
# top、left + transform
.container {
position: relative;
}
.item {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
# margin: auto
.container {
width: 500px;
height: 300px;
border: 1px solid #0a3b98;
position: relative;
}
.item {
/* 若不设置宽高则子元素会占满父容器*/
width: 200px;
height: 200px;
background: #f0a238;
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
# 宽高已知
# top、left + 负 margin
.container {
position: relative;
}
.item {
top: 50%;
left: 50%;
margin-top: -10px;
margin-left: -20px;
position: absolute;
}
1
2
3
4
5
6
7
8
9
10
2
3
4
5
6
7
8
9
10