用css样式实现返回箭头

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例图:

<view class='rt_pos'></view>
.rt_pos {
  position: absolute;
  right: 50rpx;
  top: 150rpx;
  content: "";
  display: inline-block;
  height: 20rpx;
  width: 20rpx;
  border-width: 0 6rpx 6rpx 0;
  border-color: #fff;
  border-style: solid;
  transform: matrix(0.71, 0.71, -.71, 0.71, 0, 0);
  -webkit-transform: matrix(0.71, 0.71, -.71, 0.71, 0, 0);
}

改变方向只需要改变border-width:

上箭头:border-width: 2px 0 0 2px;
右箭头:border-width: 2px 2px 0 0;
下箭头:border-width: 0 2px 2px 0;
左箭头:border-width: 0 0 2px 2px;

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转载自blog.csdn.net/qq_41241504/article/details/87921782