• 2022-07-29
    当元素浮动导致它的父元素.bigbox塌陷时,可以使用( )清除浮动
    A: .bigbox::after{ display: block; content: ""; clear: both; }
    B: .bigbox{clear: both; }
    C: .bigbox::before{ display: block; clear: both; }
    D: .bigbox{ display: block; content: "" }