js鼠標懸浮實現菜單欄

1、實現的效果圖 2.html代碼 < div class = "cm-classify-content clearfix" > < div class = "cm-kind clearfix" > < ul class = "tab" > < li class = "li cur" > 社交網絡 < i class = "fa fa-angle-right pull-right" ></ i >

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