.knows{
    margin: 0 auto;
    max-width: 1000px;
}
.list{
    min-width: 710px;
    padding-bottom: 20px;
}
.item{
    min-height: 200px;
    padding: 15px;
    border-bottom: 1px dashed #777;
}
.item .desc{
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
}
.list .item img{
    float: left;
    width: 30%;
    max-height: 200px;
}
.list .item .con{
    height: 200px;
    padding-left: 30px;
    float: left;
    width: 65%;
    display: flex;
    flex-direction: column;
    /* justify-content: flex-start; */
    /* align-content: flex-end; */
    justify-content: space-around;

}
.item .con span{
    color: red;
}
button{
    margin-left: 20px;
    width: 100px;
    height: 50px;
    margin-bottom: 15px;
}
.name1{
    display: inline-block;
    margin: 20px;
    width: 100px;
}
.type1{
    margin-left: 50px;
    font-weight: bold;
    font-size: 17px;
}
.knows .qrcode{
    text-align: center;
    margin-bottom: 30px;
}