html {
    font-family: sans-serif;
}

.header {
    display: flex;
    flex-direction: column;
    justify-content: center;
    font-size: 48px;
    color: rgb(61, 61, 61);
    height: 120px;
    box-shadow: 0 4px 2px -2px lightgray;   
}

.buying-info {
    padding: 30px;
    text-align: center;
    font-size: 1.5em;
}

.header .sub-text {
    font-size: 35px;
}

.about-the-book {
    display: flex;
}

.book-description {
    margin: 0 50px 0 50px;
    font-size: 1.5em;
    color: darkslategray;
}

.book-description p {
    margin-block-start: 0;
}

.maximized-book {
    margin-top: 5px;
    height: 1000px;
    width: 630px;
    position: absolute;
    left: 0;
    right: 0;
    margin: auto;
}

.maximized-book img {
    height: 1000px;
}

.book-showcase {
    height: 500px;
    width: 313px;
    position: relative;
}

.book-showcase img {
    height: 500px;
}

.site-container .maximized-book {
    display: none;
}

.site-container.maximized .maximized-book {
    display: block;
}

.site-container.book-back img.img-front {
    display: none;
}

.site-container.book-front img.img-back {
    display: none;
}

.site-container.maximized .header {
    display: none;
}

.site-container.maximized .about-the-book {
    display: none;
}

.site-container.maximized .about-the-author {
    display: none;
}

.flip-button {
    position: absolute;
    right: 0;
    background-color: inherit;
    border: none;
    cursor: pointer;
}

.flip-button img {
    height: 25px;
}

#bFlip {
    position: absolute;
    right: 0;
    background-color: inherit;
    border: none;
    cursor: pointer;
}

#bFlip img {
    height: 25px;
}

.maximize-button {
    position: absolute;
    left: 0;
    background-color: inherit;
    border: none;
    cursor: pointer;
}

.maximize-button img {
    height: 25px;
}

a.retailer {
    text-decoration: none;
}

.retailer img {
    height: 50px;
    margin: 10px;
}

.about-the-author {
    margin: 50px;
}

.about-the-author p {
    font-size: 1.5em;
    color: darkslategray;
}

.about-the-author label {
    font-size: 1.5em;
    font-weight: bold;
}

.about-the-author p {
    font-size: 1.5em;
}

@media (max-width: 980px) {
    .maximize-button {
        display: none;
    }

    #bFlip img {
        height: 50px;
    }

    .retailer img {
        height: 100px;
    }

    .about-the-book {
        flex-direction: column;
    }
    
    .book-showcase {
        width: 100%;
        height: inherit;
    }

    .book-showcase img {
        height: auto;
        width: 100%;
    }

    .buying-info div {
        margin-bottom: 25px;
    }

    .book-description {
        margin-top: 50px;
    }
}