zhongping-miniprogram/miniprogram/components/redDot/redDot.scss

/* components/redDot/redDot.wxss */
.redDot {
  width: 10rpx;
  height: 10rpx;
  display: inline-block;
  border-radius: 50%;
  background: red;
  position: absolute;
  top: 0px;
}