<!DOCTYPE html><html><head><meta charset="UTF-8"><title>元素水平垂直居中</title><style>/*方式一*/.box{width: 100px;height: 100px;background: red;position: absolute;top: 50%;left: 50%;margin-left: -50px;margin-top: -50px;}/*方式二*/.box{width: 100px;height: 100px;background: red;position: absolute;top: 50%;left: 50%;transform: translate(-50px,-50px);/*或者transform: translate(-50%,-50%);*/}/*方式三 技巧*/.box{width: 100px;height: 100px;background: red;position: absolute;top: 0;left: 0;right: 0;bottom: 0;margin:auto;}/*方式四 弹性盒*/.father{display: flex;width: 400px;height: 400px;background: red;justify-content: center;align-items: center;}.son{width: 100px;height: 100px;background: aqua;}</style></head><body><div class="box">我需要用多种方式居中你</div><div class="father"><div class="son"></div></div></body></html>
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