.container-modal{
    top:50%;
    left:50%;
    width:400px;
    height:300px;
    margin-top:-150px;
    margin-left:-200px;
    position:fixed;
    background-color:#fff;
    z-index:99999999;
    padding:35px;
    overflow-y:scroll;
    box-shadow:2px 7px 5px rgba(0,0,0,0.4);
}

.overlay-modal {
    opacity:0.3;
    background: #000;
    width: 100%;
    height: 100%;
    position: fixed;
    z-index: 99999998;
    top: 0;
    left: 0;
}