1.position方法
position+margin.target {position: absolute;margin: auto;top: 0;left: 0;bottom: 0;right: 0;}复制代码
position+transform
.target {position: absolute;top: 50%;left: 50%;transform: translate(-50%,-50%);}复制代码
2.display方法
table+vertical-align+text-align.target {display: table-cell;text-align: center;vertical-align: middle;}复制代码
3.flex布局
align-items+justify-content.target {display: flex;justify-content: center;align-items: center;}复制代码
4.grid布局
place-content.target {display: grid;place-content: center;}复制代码