body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    background:#f9f9f9
}

.gg-box {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    grid-auto-rows: 200px;
    grid-gap:8px
}

.gg-box img {
    object-fit: cover;
    cursor: pointer;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.02);
    border-radius:10px
}

.gg-box img:hover {
    opacity:.98
}

#gg-screen {
    position: fixed;
    width: 100%;
    height: 100%;
    z-index: 1;
    top: 0;
    left: 0;
    background: rgba(255, 255, 255, 0.85);
    z-index: 9999;
    text-align:center
}

#gg-screen .gg-image {
    height: 100%;
    display: inline-flex;
    justify-content: center;
    align-items:center
}

#gg-screen .gg-image img {
    max-width: 100%;
    max-height: 100%;
    margin:0 auto
}

.gg-bt {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.6);
    color: #222;
    text-align: center;
    line-height: 47px;
    vertical-align: middle;
    cursor: pointer;
    -moz-transition: all .4s ease;
    -o-transition: all .4s ease;
    -webkit-transition: all .4s ease;
    transition: all .4s ease;
    font-size: 25px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-sizing: border-box;
    padding-left: 2px;
    position: fixed;
    bottom:10px
}

.gg-bt:hover {
    background: rgba(255, 255, 255, 0.8);
    border:1px solid rgba(0, 0, 0, 0.5)
}

.gg-close {
    top:10px
}

.gg-close, .gg-next {
    right:10px
}

.gg-prev {
    right:61px
}

.gg-prev, .gg-next {
    bottom:10px
}

@media (min-width: 478px) {
    .gg-box img:nth-child(3n + 0) {
        grid-row-end:span 2
    }
}

@media (max-width: 768px) {
    .gg-box {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        grid-auto-rows: 150px;
        grid-gap:6px
    }
}

@media (max-width: 450px) {
    .gg-box {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
        grid-auto-rows: 100px;
        grid-gap: 4px
    }
}