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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                ![](https://box.kancloud.cn/6e247156d80870126909f0a6eeda56a6_89x64.PNG) ![](https://box.kancloud.cn/39a5ca91c1a3bcd40856218eb4c46b70_107x71.PNG) 如三條綠的變成三條白的 ~~~ <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#collapse"> <span class="sr-only">toggle</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> ~~~ 主要樣式 ~~~ .navbar-toggle:hover .icon-bar{ background:white; } ~~~ 2 兄弟元素hover ~~~ <div class="one"></div> <div class="two"></div> one:hover+two{}; ~~~
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