垂直居中

使用表格的 vertical-align property 属性

<div id="wrapper">
  <div id="cell">
    <div class="content">Content goes here</div>
  </div>
</div>

#wrapper {
  display: table;
}

#cell {
  display: table-cell;
  vertical-align: middle;
}

绝对定位的

<div class="content">Content goes here</div>

#content {
  position: absolute;
  top: 50%;
  height: 240px;
  margin-top: -120px; /* negative half of the height */
}

#content {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  height: 240px;
  width: 70%;
}

位移

.wp {
  position: relative;
}
.box {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

转换为行内块

.wp {
  line-height: 300px;
  text-align: center;
  font-size: 0px;
}
.box {
  font-size: 16px;
  display: inline-block;
  vertical-align: middle;
  line-height: initial;
  text-align: left; /* 修正文字 */
}

flex

.wp {
  display: flex;
  justify-content: center;
  align-items: center;
}

grid

.wp {
  display: grid;
}
.box {
  align-self: center;
  justify-self: center;
}