#tempmail-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.6);
    z-index: 9999;
}

.tempmail-modal-content {
    background: #fff;
    max-width: 700px;
    margin: 5% auto;
    padding: 20px;
    position: relative;
}

#tempmail-close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 22px;
    background: none;
    border: none;
    cursor: pointer;
}