html, body {height: 100%;}
#wrap {min-height: 100%;width: 100%;}
#main {overflow:auto;
    padding-bottom: 180px;}
#footer {position: relative;
    margin-top: -180px;
    /* height: 180px; */
    clear:both;}
body:before {
    content:"";
    height:100%;
    float:left;
    width:0;
    margin-top:-32767px;
}