viewer/static/global.css

html,
body {
    font-family: 'Roboto', sans-serif;
    background-color: #1a1b1e;
    color: white;
}

.container {
    padding-left: 15px;
    padding-right: 15px;
    margin-left: auto;
    margin-right: auto;
    max-height: 100vh;
    overflow-y: auto;

    @media (min-width: 576px) {
        max-width: 540px;
    }

    @media (min-width: 768px) {
        max-width: 720px;
    }

    @media (min-width: 992px) {
        max-width: 960px;
    }

    @media (min-width: 1200px) {
        max-width: 1140px;
    }
}


.header {
    padding: 20px 0;
    font-size: 32px;
    font-weight: bold;
    color: #aaa;
}

.viewer {
    margin: 0;
    padding: 0;
    overflow: hidden;
}

.grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    width: 100%;
}

.grid-item {
    background: #333;
    position: relative;
    border: 1px solid #000;
    box-sizing: border-box;
    overflow: hidden;
    width: 100%;

    @media (min-width: 576px) {
        width: calc(33.333% - 10px);
    }

    @media (min-width: 768px) {
        width: calc(25% - 10px);
    }

    @media (min-width: 992px) {
        width: calc(20% - 10px);
    }

    @media (min-width: 1200px) {
        width: calc(16.666% - 10px);
    }
}

.grid-item::before {
    content: "";
    display: block;
    padding-top: 100%;
}

.grid-item:hover {
    cursor: pointer;
}

.grid-item .title {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.2);
    color: #fff;
    text-align: center;
    padding: 10px;
    box-sizing: border-box;
    font-size: 14px;
    height: 40px;
    overflow: hidden;
    transition: height 0.2s ease;
}

.grid-item:hover .title {
    height: 48px;
}

.thumbnail {
    position: absolute;
    top: -10px;
    ;
    left: 0;
    width: 100%;
    height: auto;
    overflow: hidden;
    scale: 1;
    transition: scale 0.2s ease;
}

.grid-item:hover .thumbnail {
    scale: 1.1;
}