水平居中
flex 布局
.parent {
display: flex;
justify-content: center;
}
或者
.parent {
display: flex;
flex-direction: column;
align-items: center;
}
内联元素
.parent {
text-align: center;
}
margin
.children {
margin: 0 auto;
}
position
.parent {
position: relative;
}
.children {
position: absolute;
left: 50%;
top: 0;
transform: translateX(-50%);
}
table
过时,放弃
垂直居中
flex 布局
.parent {
display: flex;
align-items: center;
}
或者
.parent {
display: flex;
flex-direction: column;
justify-content: center;
}
内联元素
.parent {
height: 100px;
line-height: 100px;
}
margin
必须设置父元素高度。
.parent {
height: 100px;
}
.children {
margin: auto 0;
}
position
.parent {
position: relative;
}
.children {
position: absolute;
left: 0;
top: 50%;
transform: translateY(-50%);
}