.di {
position: fixed !important;
left: 0px !important;
bottom: 0px !important;
width: 100% !important;
height: 50px !important;
z-index: 9999 !important;
}
.di {
position: fixed !important;
left: 0px !important;
bottom: 0px !important;
width: 100% !important;
height: 50px !important;
z-index: 9999 !important;
}
本文标题：CSS如何把DIV永远置于页面的底部
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