h3 {
    margin: auto auto 0 auto;
}

.main-div {
    max-width: 1200px;
    margin: 30px auto;
    background-color: #FFF;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.book-main-div {
    display: flex;
}

.book-cover-div {
    flex: 1;
}

.book-infos-div {
    flex: 2;
}

.book-cover-div img {
    display: flex;
    width: 90%;
    height: auto;
    border-radius: 25px;
    margin: 0 auto;
}

.book-infos-div h3 {
    text-align: center;
}

.book-infos-div a {
    display: block;
    text-align: center;
    width: 100%;
    color: var(--grey-text);
    background-color: var(--hover-background);
    margin: 10px 0 0 0;
    padding: 10px 0;
    border-radius: 15px;
    transition: color 0.1s, background-color 0.1s;
    text-decoration: none;
}

.book-infos-div a:hover {
    color: #FFF;
    background-color: var(--focus);
    transition: color 0.1s, background-color 0.1s;
}

.book-author-div {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.book-synopsis-div, .book-details-div, .book-price-div {
    margin: 10px 0 0 0;
}

.book-synopsis-div p {
    font-size: 1em;
    text-align: justify;
}

.book-details-div div, .book-price-div div {
    display: flex;
}

.book-details-title, .book-price-title {
    font-weight: bold;
}

.book-details-div div p, .book-price-div div p {
    font-size: 1em;
}

@media screen and (max-width: 730px) {
    .book-main-div {
        flex-direction: column;
    }

    .book-infos-div {
        margin: 20px 0 0 0;
    }

    .book-author-text, .book-details-title, .book-price-title {
        font-size: 1em;
    }

    .book-synopsis-div p {
        font-size: 0.9em;
        text-align: justify;
    }

    .book-details-div div p, .book-price-div div p {
        font-size: 0.9em;
    }
}