代码我从网上找来的，以前都有效，这几天突然失效了，代码请看图
This topic created in 1850 days ago, the information mentioned may be changed or developed.
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liyang5945Oct 11, 2021
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可能是 css 权重问题，加个 important 试试，background: none !important;
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@liyang5945 可以，感谢老铁
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