#promo-map {
    width: 70%;
    height: 600px;
    float: left;
}

#promo-sidebar {
    width: 28%;
    float: right;
    background: #f7f7f7;
    padding: 10px;
    border-left: 1px solid #ccc;
    height: 600px;
    overflow-y: auto;
}