.custom-modal {
    display: none;
    position: fixed;
    z-index: 1050;
    inset: 0;
    background: rgba(0,0,0,.4);
}

.custom-modal-content {
    background: #fff;
    margin: 10% auto;
    padding: 20px;
    width: 80%;
    border-radius: 4px;
}

.custom-modal-close {
    float: right;
    font-size: 28px;
    cursor: pointer;
}