#jianjie {
    padding-top: 50px;
    font-size: 14px;
}

#zuoipin {
    width: 800px;
    margin: 0 auto;
    font-size: 0px;
}

#zuoipin img {
    width: 390px;
    margin: 0 auto;
    font-size: 0px;
    height: 200px;
    margin-left: 5px;
    margin-right: 5px;
    margin-bottom: 20px;
}