.vertical{
    margin-top: 40px;
    margin-bottom: 30px;
}

.popup {
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.4);
    display: none;
}
.popup-content {
    background-color: white;
    margin: 20% auto;
    padding: 20px;
    border: 1px solid #888888;
    width: 30%;
    font-weight: bolder;
}
.popup-content button {
    display: block;
    margin: 0 auto;
}
.show {
    display: block;
}