footer始终在底部CSS样式
#footer{
position:absolute;
bottom:0;
width:100%;
height:10px;
background:#ccc;
line-height:100px;
text-align:center;
}
position:absolute;
bottom:0;
width:100%;
height:10px;
background:#ccc;
line-height:100px;
text-align:center;
}