我想在大屏幕上显示一个指向左边的字体真棒手指。在小屏幕(移动(上，我想显示一个指向上方的手指。
我只能在移动设备端显示向上的手指，但在桌面上，我看到的是两个手指。
如何更正显示类的使用？
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<i class="far fa-hand-point-up fa-4x .d-block .d-sm-none"></i>提前谢谢你，
提姆
它适用于小的变化，请参阅工作小提琴。
请记住，必须从类属性中删除点。
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<i class="far fa-hand-point-up fa-4x d-block d-sm-none"></i>如果要更改发生图标更改的屏幕大小，请按照文档进行操作。
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