.overlay{
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    display: none;
}

.modal{
    display: none;
    background:#424242;
    padding:0 20px 20px;
    overflow:auto;
    z-index:1001;
    position:absolute;
    width: 720px;
    min-height: 300px;
}