.book-list{
    width: 100%;
    height: auto;
}
.book-item{
    width: 19%;
    height: 320px;
    float: left;
    margin-right: 1.25%;
    transition: all 0.6s;
    cursor: pointer;
    margin-bottom: 20px;
    border: 1px solid rgba(0,0,0,0.1);
}
.book-item:hover{
    transform: translate3d(0, -3px, 0);
    box-shadow: 0 15px 30px rgb(0 0 0 / 10%);
}
.book-item:nth-of-type(5n){
    margin-right: 0;
}
.book-image{
    width: 100%;
    height: 280px;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}
.book-image img{
    width: 100%;
    height: 100%;
}
.book-title{
    width: 100%;
    height: 40px;
    text-align: center;
    line-height: 40px;
    color: rgba(0,0,0,0.8);
    font-size: 15px;
}

@media (max-width: 800px) {
    .book-item{
        width: 32%;
        height: 210px;
    }
    .book-image{
        height: 180px;
    }
    .book-title{
        height: 30px;
        font-size: 12px;
        line-height: 30px;
    }
    .book-item:nth-of-type(5n){
        margin-right: unset;
    }
    .book-item:nth-of-type(3n){
        margin-right: 1.34%;
    }
}