WXDemo/miniprogram/pages/basic/scene-basic-particle/index.wxss

.button-wrap {
  line-height: 60rpx;
  text-align: center;
  vertical-align: middle;
}

.change-button {
  display: inline-block;
  background-color: #000;
  color: #fff;
  font-size: 22rpx;
  margin: 10rpx;
  padding: 5rpx 24rpx;
  border-radius: 6rpx;
}

.env-words {
  text-align: center;
  vertical-align: baseline;
  margin: 10rpx 0;
}

.env-words .tips {
    font-size: 20rpx;
}

.env-words .content {
  font-size: 28rpx;
  font-weight: bold;
}