.year_style {
    font-size: 14pt;
    font-family: Courier;
    text-align: center;
}

.month_style {
    text-align: center;
}

.month_style h1 {
    font-size: 13pt;
    font-family: Courier;
    font-weight: normal;
}

.books {
    display: flex;
    flex-flow: row wrap;
    justify-content: center;
}

.book {
    text-align: center;
    font-size: 8pt;
    font-family: Courier;
    width: 16%;
}

.book h1 {
    align: center;
    font-size: 10pt;
    font-family: Courier;
    font-weight: normal;
}

.book img {
    width: 90%;
}

.book img:hover {
    transform: scale(1.4);
    transition: 0.6s;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0);
}