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我的学习日志(十一) #13

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xxxgitone opened this issue Jul 3, 2017 · 0 comments

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xxxgitone commented Jul 3, 2017

今天又发现一种新的居中方式，给父元素加相对定位，待居中元素，使用绝对定位

<div class="box">
  <div></div>
</div>

css样式

.box {
  width: 200px;
  height: 200px;
  border: 1px solid red;
  position: relative;
}

.box div {
  width: 50px;
  height: 50px;
  background: red;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  margin: auto;
}

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