.father{
position:relative;
}
.son{
position:absolute;
top:50%;
left:50%;
transform:translate(-50%,-50%);
}
或者彈性布局,兼容性差點
.father{
display:flex;
justify-content:center;
align-items:center;
}
                            

1 反對 回復 2019-05-21