.book-section {
    margin-bottom: 60px;
}

.book-title {
    font-family: "Libre Franklin", sans-serif;
    font-weight: 800;
    font-size: 1.4rem;
    color: rgb(210,210,210);
    text-decoration: none;
    text-transform: uppercase;
    margin-bottom: 10px;
    margin-top: 40px;
}

.book-year {
    font-family: Arial, sans-serif;
    font-size: 1.2em;
    color: #f8e71c;
    margin-bottom: 20px;
}

main {
    position: relative;
    padding-top: 56.25%;
    /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
}

main iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

hr {
    border: none;
    border-top: 1px solid rgb(130,130,130);
}