#map {
    width: 100%;
    height: 500px;
    margin-bottom: 30px;
}

.jianjie {
    width: 290px;
    float: left;
    margin-right: 7px;
}

.jianjie {
    width: 100%;
    /* float: left; */
    margin-right: 20px;
}

.neirong img {
    width: 100%;
    /* float: left; */
}