.box {
    width: 40em;
    height: 40em;
    margin: 1em;
    box-shadow: 0.3em 0.3em 5em rgba(0, 0, 0, 0.1);
    padding: 1em;
    padding-top: 2em;
}

.vertical-center {
    width: 40em;
    max-width: 90%;
    background-color: white;
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}