/*** Daily first-visit overlay ***/
.overlay {
    position: fixed;
    display: none;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.85);
    z-index: 1100;
    cursor: pointer;
}
.overlay_image {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    -ms-transform: translate(-50%,-50%);
    max-width: 90vw;
    max-height: 90vh;
}
.overlay_image img {
    display: block;
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
}
.overlay_x {
    position: absolute;
    top: -20px;
    right: -20px;
    font-size: 25px;
    color: white;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-weight: bold;
    z-index: 10;
}