.modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 999999; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgb(0,0,0); /* Fallback color */
    background-color: rgba(0,0,0,0.6); /* Black w/ opacity */
}

/* Modal Content/Box */
.modal-content {
    background-color: #fefefe;
    margin: 5% auto; /* 15% from the top and centered */
    padding: 10px;
    border: 1px solid #888;
    /* width: 55%; */ /* Could be more or less, depending on screen size */
}

.modal-body {
    padding-top: 5px;
}

/* The Close Button */
.close {
    color: #aaa;
    float: right;
    font-size: 20px;
    font-weight: bold;
}

    .close:hover,
    .close:focus {
        color: black;
        text-decoration: none;
        cursor: pointer;
    }

.gallery__thumbnails .swiper-wrapper {
    display: flex;
    justify-content: center;
}

#overlay {
    position: relative; /* Sit on top of the page content */
    background-color: rgba(0,0,0,0.5); /* Black background with opacity */
    z-index: 2; /* Specify a stack order in case you're using a different order for other elements */
    cursor: pointer; /* Add a pointer on hover */
}

.box {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-color: rgba(0,0,0,0.5); /* for demo purpose  */
}

.stack-top {
    z-index: 9;
    margin: 0px; /* for demo purpose  */
}