.books {
    display: flex;
    flex-wrap: wrap;
    flex-direction: row;
    gap: 40px;
    text-align: center;
    justify-content: center;
    align-items: center;
    align-content: center;
    max-width: 1150px;
}

.books .book {
    position: relative;
    flex: 1 1;
    max-width: 240px;
    min-width: 200px;
    width: 100%;
    aspect-ratio: 6/9;
    cursor: pointer;
}

.books .book .c1t {
    position: absolute;
    top: 0;
    left: 0;
    width: 180px;
    aspect-ratio: 6/9;
    z-index: 2;
    border: 1px solid white;
    box-shadow: 0px 2px 20px rgba(0, 0, 0, 0.5);
}

.books .book .c4t {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 180px;
    aspect-ratio: 6/9;
    z-index: 1;
    border: 1px solid white;
    box-shadow: 0px 2px 20px rgba(0, 0, 0, 0.5);
}

.books .book .c4t:hover {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 180px;
    aspect-ratio: 6/9;
    z-index: 3;
    border: 1px solid white;
    box-shadow: 0px 2px 20px rgba(0, 0, 0, 0.5);
}