body {
            font-family: Georgia, serif;
            margin: 0;
            background-color: rgb(233 233 233 / 50%);
        }
        
        @keyframes opacityMe {
            from {
                opacity: 0;
            }
            to {
                opacity: 0.65;
            }
        }
        
        @keyframes scaleMe {
            from {
                transform: scale(1);
            }
            to {
                transform: scale(1.1);
            }
        }
        
        .common-section {
            margin: 0 auto;
            z-index: 900;
            width: 92%;
            position: relative;
            box-shadow: 0px 0px 8px 0px rgba(34, 60, 80, 0.1);
            background-color: rgb(255 255 255);
        }
        
        .categories {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.25em 1.2em;
        }
        
        .subcategories {
            display: flex;
        }
        
        .button {
            flex: 0 1 calc(18% - 0.25em);
            display: flex;
            text-align: center;
            margin: 0.25em 0.6em;
            font-size: 1.15em;
            padding: 0.25em 1em;
            align-items: center;
            justify-content: center;
            border-radius: 0.36em;
            transition: .2s linear;
            cursor: pointer;
            background: rgba(233, 236, 239, 1);
            color: rgba(52, 58, 64, 1);
        }
        
        .button.additional {
            text-decoration: none;
        }
        
        .button.home {
            background-color: rgb(27, 38, 59);
            color: rgb(224, 225, 221);
        }
        
        .button.active {
            background: rgba(52, 58, 64, 1);
            color: rgba(233, 236, 239, 1);
        }
        
        .overlay,
        .flex-container {
            top: 0;
            left: 0;
            position: fixed;
            width: 100%;
            height: 100vh;
        }
        
        .overlay {
            z-index: 950;
            animation: opacityMe 1s forwards;
            background-color: black;
        }
        
        .flex-container {
            z-index: 960;
            display: flex;
            justify-content: center;
            align-items: top;
        }
        
        .modal-window {
            position: relative;
            margin-top: 4vh;
            border-radius: 0.2em;
            width: 92%;
            background-color: whitesmoke;
            overflow: scroll;
            padding: 1.6em 1.2em;
            display: flex;
            flex-wrap: wrap;
            gap: 1.5em;
        }
        
        .books-section {
            display: flex;
            flex-wrap: wrap;
            justify-content: flex-start;
            margin-top: 0.5em;
        }
        
        .book-cover {
            position: relative;
        }
        
        .cost {
            margin: 1em 0 0.5em 0;
            text-align: right;
        }
        
        .cost::after {
            font-family: 'Font Awesome 6 Free';
            content: '\f158';
            font-size: 0.7em;
            display: inline-block;
            margin-left: 0.35em;
            color: rgb(52, 58, 64);
            font-weight: 600;
        }
        
        .cost.none::after {
            content: none;
        }
        
        .book-preview {
            flex: 0 1 calc(24% - 1.2em);
            margin: 1em 0.5em;
            border: 1px solid rgba(52, 58, 64, 0.15);
            background-color: rgba(52, 58, 64, 0.05);
            border-radius: 0.36em;
        }
        
        .book-cover {
            overflow: hidden;
        }
        
        .book-preview.modal {
            min-width: 30%;
            max-width: 30%;
        }
        
        .book-cover img {
            transition: transform 1.2s ease;
        }
        
        .book-cover:hover img {
            transform: scale(1.1);
        }
        
        .preview-title {
            text-align: right;
            font-size: 1.25em;
            margin-top: 0.25em;
            cursor: pointer;
        }
        
        .preview-title,
        .cost {
            padding: 0 1em;
        }
        
        .book-description {
            font-size: 1.1em;
        }
        
        .book-description,
        .details {
            text-align: justify;
            line-height: 1.5;
        }
        
        .description-section {
            flex: 1 1;
        }
        
        .images-section,
        .book-description,
        .details {
            margin-top: 1em;
        }
        
        .preview-cover-img {
            width: 100%;
        }
        
        .images-section {
            display: flex;
            flex-wrap: wrap;
            gap: 1em;
        }
        
        .for-img {
            flex: 0 1 calc(20% - 1em);
        }
        
        .illustration {
            width: 100%;
        }
        
        .for-img:hover img {
            animation: scaleMe 1.5s forwards;
        }
        
        .for-img {
            overflow: hidden;
            cursor: pointer;
        }
        
        .example-pages {
            width: 100%;
            text-align: left;
            font-weight: bold;
            margin: .5em 0;
        }
        
        .book-header {
            font-size: 1.3em;
        }
        
        .close {
            position: absolute;
            right: 0.5em;
            top: 0.5em;
            opacity: 0.6;
            cursor: pointer;
        }