设置居中移动端显示文本偏上问题

在有背景的view上Android手机文本显示偏上，iOS手机显示正常

显示偏上

.device-main-flag {
  height: 30rpx;
  width: 30rpx;
  background: #ff6e00;
  border-radius: 6rpx;
  font-weight: bold;
  font-size: 20rpx;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-left: 10rpx;
}

显示偏上

显示正常

css增加 line-height: normal;

.device-main-flag {
  height: 30rpx;
  width: 30rpx;
  background: #ff6e00;
  border-radius: 6rpx;
  font-weight: bold;
  font-size: 20rpx;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  line-height: normal;
  margin-left: 10rpx;
}

显示正常