main {
    background-image: linear-gradient(to bottom, #dbedf9, #dbedf9, #1495ec);
}

main>div {
    text-align: center;
    margin: 50px auto;
    padding: 5px 0;
    padding-bottom: 30px;
}

main #sitemap {
    border-radius: 20px;
    border: 1px solid blue;
    cursor: pointer;
    transition: 0.3s;
}

main #sitemap:hover {
    opacity: 0.7;
}

/* The Modal (background) */
.modal {
    display: none;
    /* Hidden by default */
    position: fixed;
    /* Stay in place */
    z-index: 1;
    /* Sit on top */
    padding-top: 100px;
    /* Location of the box */
    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, 0.9);
    /* Black w/ opacity */
}

/* Modal Content (image) */
.modal .modal-content {
    margin: auto;
    display: block;
    width: 100%;
    max-width: 700px;
}

/* Caption of Modal Image */
.modal #caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    height: 150px;
}

/* Add Animation */
.modal .modal-content,
.modal #caption {
    -webkit-animation-name: zoom;
    -webkit-animation-duration: 0.6s;
    animation-name: zoom;
    animation-duration: 0.6s;
}

@-webkit-keyframes zoom {
    from {
        -webkit-transform: scale(0)
    }

    to {
        -webkit-transform: scale(1)
    }
}

@keyframes zoom {
    from {
        transform: scale(0)
    }

    to {
        transform: scale(1)
    }
}

/* The Close Button */
.modal .close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
}

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