.bg{
    width: 100%;
    height: 100%;
    position: fixed;
    left: 0;
    top: 0;
    background-color: #ccc;
    opacity: .6;
}
#popup{ -webkit-box-shadow:0 0 5px 5px rgba(0,0,0,.3); -moz-box-shadow:0 0 5px 5px rgba(0,0,0,.3); box-shadow:0 0 5px 5px rgba(0,0,0,.3);text-align:center;padding:10px 20px;}
#popup p{text-align:left; font-size:14px;margin-bottom:5px;}