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布局-水平垂直居中

结构:

1 <div class="parent">2         <div class="child">DEMO</div>3     </div>

样式:

1.解决方案一:text-align + inline-block + table-cell + vertical-align(结合前面的水平居中+垂直居中)

 1 .parent { 2         background-color: grey; 3         width: 300px; 4         height: 200px; 5  6         display: table-cell; 7         vertical-align: middle; 8  9         text-align: center;10     }11     .child  {12         display: inline-block;13         background-color: skyblue;14     }

2.解决方案二: absolute+transform

.parent {        background-color: grey;        width: 300px;        height: 200px;        position: relative;    }    .child  {        position: absolute;        top: 50%;/*相对容器的百分比*/        left: 50%;        transform: translate(-50%,-50%);/*相对自身的百分比*/        background-color: skyblue;    }

3.解决方案三:flex + justify-content + align-items

.parent {        background-color: grey;        width: 300px;        height: 200px;        display: flex;        justify-content: center;        align-items: center;    }    .child  {                background-color: skyblue;    }

 

布局-水平垂直居中