.lightbox {
    display: none;
    position: fixed;
    z-index: 999999999;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-color: rgba(0, 0, 0, 0.5);
}

.box {
    position: absolute;
    padding: 10px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #333;
    color: #fff;
    border-radius: 10px;
}

    h2, .box p {
        margin: 0 20px;
    }

.close {
    position: absolute;
    left: 100%;
    top: 0;
    margin: -10px 0 0 -10px;
    width: 20px;
    height: 20px;
    color: #fff;
    font-size: 13px;
    font-weight: bold;
    text-align: center;
    border-radius: 50%;
    background-color: #5c5c5c;
    cursor: pointer;
    text-decoration: none;
}