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html - 为什么在引导程序中我的手风琴菜单旁边有一个空矩形？

问题描述

这是我的内容显示中似乎有问题的图像，通常显示不正确的图像链接的空三角形正在显示，但我没有图像并且字体图标工作正常，什么这可以吗？

我期待空矩形消失，是什么原因造成的，我该如何摆脱它

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标签： htmlbootstrap-4

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