wendzzoo水平垂直居中布局方案
[定宽高] - 绝对定位和负magin值
scss
.parent {
width: 200px;
height: 200px;
border: 1px solid #333;
position: relative;
.child {
width: 100px;
height: 80px;
background-color: red;
position: absolute;
top: 50%;
left: 50%;
margin-top: -40px;
margin-left: -50px;
}
}
[定宽高] - 绝对定位和transform
scss
.parent {
width: 200px;
height: 200px;
border: 1px solid #333;
position: relative;
.child {
width: 100px;
height: 80px;
background-color: red;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
}
[不定宽高] - 绝对定位和transform
html
<div class="parent">
<div class="child">https://zuowendong.github.io/zwd/</div>
</div>
<style>
.parent {
width: 300px;
height: 300px;
border: 1px solid #333;
position: relative;
}
.child {
background-color: red;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
</style>
[定宽高] - 绝对定位top/left/bottom/right和margin
scss
.parent {
width: 200px;
height: 200px;
border: 1px solid #333;
position: relative;
.child {
width: 100px;
height: 80px;
background-color: red;
position: absolute;
top: 0;
left: 0;
bottom: 0;
right: 0;
margin: auto;
}
}
[定宽高 / 不定宽高] - flex
scss
.parent {
width: 200px;
height: 200px;
border: 1px solid #333;
display: flex;
align-items: center;
justify-content: center;
.child {
width: 100px; // [不定宽高] 去除
height: 80px; // [不定宽高] 去除
background-color: red;
}
}
[不定宽高] - flex和margin
scss
.parent {
width: 300px;
height: 300px;
border: 1px solid #333;
display: flex;
.child {
background-color: red;
margin: auto;
}
}
[定宽高 / 不定宽高] - grid
scss
.parent {
width: 200px;
height: 200px;
border: 1px solid #333;
display: grid;
align-items: center;
justify-items: center;
.child {
width: 100px;
height: 80px;
background-color: red;
}
}
[不定宽高] - grid
scss
.parent {
width: 300px;
height: 300px;
border: 1px solid #333;
display: grid;
.child {
background-color: red;
align-self: center;
justify-self: center;
}
}
[不定宽高] - grid和margin
scss
.parent {
width: 300px;
height: 300px;
border: 1px solid #333;
display: grid;
.child {
background-color: red;
margin: auto;
}
}