html {
    font-size: 14px;
    /* background-color: black; */
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
    margin-bottom: 60px;
    color: white;
    /* background-color: black; */
    background-color: rgb(0,0,0);
    background-image: url("../images/black_abstract_stone_pattern_tileable.jpg");
    background-position: top left;
    background-repeat: repeat;
    background-attachment: fixed;
}

header {
}

p {
  font-size: 26px;
}
/* The same layout with floats ► https://codepen.io/Rafiozoo/pen/BYVOeg */
/* IE / Edge support with SVG ► https://codepen.io/Rafiozoo/pen/MQBZbd */
IMG {
    width: 100%;
    display: block;
}

.nav-item {
  padding: 25px;
  font-size: 30px;
}

.item IMG {
    visibility: visible;
}
.container-hc {
    margin: 2rem auto;
    padding: 0.5rem 0 2.4rem;
    /* 	background-color: gold; */
    text-align: center;
    max-width: 62rem;
}

.item {
    width: 10rem;
    height: 10rem;
    position: relative;
    /* Default - simple fallback when no CSS Grid support */
    display: inline-block;
    margin: 0.4rem;
}

    .item::before { /* Goldenrod outline on the hexagon */
        content: "";
        position: absolute;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        background-color: goldenrod;
        clip-path: polygon(50% 0, 93.3% 25%, 93.3% 75%, 50% 100%, 6.7% 75%, 6.7% 25%);
        transform: scale(1.077);
        transition: transform 0.3s;
    }

    .item:hover::before {
        transform: scale(1.154);
    }

    .item A {
        position: absolute;
        top: 0;
        bottom: 0;
        left: 0;
        right: 0;
        /* 	background-image: See JS. */
        background-size: cover;
        background-position: center;
        clip-path: polygon(50% 0, 93.3% 25%, 93.3% 75%, 50% 100%, 6.7% 75%, 6.7% 25%);
    }
.row > .column {
    padding: 0 8px;
}

.row:after {
    content: "";
    display: table;
    clear: both;
}

/* Create four equal columns that floats next to eachother */
.column {
    float: left;
    width: 25%;
}

/* The Modal (background) */
.modal {
    display: none;
    position: fixed;
    z-index: 1;
    padding-top: 75px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: black;
}

/* Modal Content */
.modal-content {
    position: center;
    background-color: #fefefe;
    margin: auto;
    padding: 0;
    width: 90%;
    max-width: 700px;
    max-height:250px;
}

/* The Close Button */
.close {
    color: white;
    position: absolute;
    top: 10px;
    right: 25px;
    font-size: 35px;
    font-weight: bold;
}

    .close:hover,
    .close:focus {
        color: #999;
        text-decoration: none;
        cursor: pointer;
    }

/* Hide the slides by default */
.mySlides {
    display: none;
}

/* Next & previous buttons */
.prev,
.next {
    cursor: pointer;
    position: absolute;
    top: 50%;
    width: auto;
    padding: 16px;
    margin-top: -50px;
    color: white;
    font-weight: bold;
    font-size: 20px;
    transition: 0.6s ease;
    border-radius: 0 3px 3px 0;
    user-select: none;
    -webkit-user-select: none;
}

/* Position the "next button" to the right */
.next {
    right: 0;
    border-radius: 3px 0 0 3px;
}

    /* On hover, add a black background color with a little bit see-through */
    .prev:hover,
    .next:hover {
        background-color: rgba(0, 0, 0, 0.8);
    }

/* Number text (1/3 etc) */
.numbertext {
    color: #f2f2f2;
    font-size: 12px;
    padding: 8px 12px;
    position: absolute;
    top: 0;
}

/* Caption text */
.caption-container {
    text-align: center;
    background-color: black;
    padding: 2px 16px;
    color: white;
}

img.demo {
    opacity: 0.6;
}

.active,
.demo:hover {
    opacity: 1;
}

img.hover-shadow {
    transition: 0.3s;
}

.hover-shadow:hover {
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}


@supports (display: grid) {

    @media (min-width: 17rem) {
        .container-hc {
            display: grid;
            max-width: 15rem;
            grid-template-columns: repeat(3, 5rem);
            align-content: center
        }

        .item {
            grid-column: span 2;
            margin: 0; /* reset */
            margin-bottom: -1.4rem; /* shifting up the items in the next row */
        }

            .item:nth-child(even) {
                grid-column: 2
            }
    }

    @media (min-width: 22rem) {
        .container-hc {
            max-width: 20rem;
            grid-template-columns: repeat(4, 5rem);
        }

        .item:nth-child(3n+1) {
            grid-column: 1
        }

        .item:nth-child(3n+2) {
            grid-column: 3
        }

        .item:nth-child(3n+0) {
            grid-column: 2
        }
    }

    @media (min-width: 32rem) {
        .container-hc {
            max-width: 30rem;
            grid-template-columns: repeat(6, 5rem);
        }

        .item:nth-child(5n+1) {
            grid-column: 1
        }

        .item:nth-child(5n+2) {
            grid-column: 3
        }

        .item:nth-child(5n+3) {
            grid-column: 5
        }

        .item:nth-child(5n+4) {
            grid-column: 2
        }

        .item:nth-child(5n+0) {
            grid-column: 4
        }
    }

    @media (min-width: 42rem) {
        .container-hc {
            max-width: 40rem;
            grid-template-columns: repeat(8, 5rem);
        }

        .item:nth-child(7n+1) {
            grid-column: 1
        }

        .item:nth-child(7n+2) {
            grid-column: 3
        }

        .item:nth-child(7n+3) {
            grid-column: 5
        }

        .item:nth-child(7n+4) {
            grid-column: 7
        }

        .item:nth-child(7n+5) {
            grid-column: 2
        }

        .item:nth-child(7n+6) {
            grid-column: 4
        }

        .item:nth-child(7n+0) {
            grid-column: 6
        }
    }

    @media (min-width: 54rem) {
        .container-hc {
            max-width: 50rem;
            align-content: center;
            grid-template-columns: repeat(10, 5rem);
        }

        .item:nth-child(9n+1) {
            grid-column: 1
        }

        .item:nth-child(9n+2) {
            grid-column: 3
        }

        .item:nth-child(9n+3) {
            grid-column: 5
        }

        .item:nth-child(9n+4) {
            grid-column: 7
        }

        .item:nth-child(9n+5) {
            grid-column: 9
        }

        .item:nth-child(9n+6) {
            grid-column: 2
        }

        .item:nth-child(9n+7) {
            grid-column: 4
        }

        .item:nth-child(9n+8) {
            grid-column: 6
        }

        .item:nth-child(9n+0) {
            grid-column: 8
        }
    }
}