.banner{
    width: 100%;
    height: auto;
    display: inline-block;
}
.banner img{
    width: 100%;
}
.main {
    width: 100%;
    height: auto;
    display: inline-block;
    margin-bottom: 70px;
}
.main-top{
    width: 100%;
    height: auto;
    display: inline-block;
    border-bottom: 1px solid#e8e8e8;
}
.main-left{
    float: left;
    line-height: 65px;
    letter-spacing: 1px;
}
.main-left img{
    float: left;
    margin-right: 6px;
    margin-top: 24px;
}
.main-left p{
    float: left;
}
.main-left p a{
    color: #434343;
}
.main-nav{
    float: right;
    line-height: 73px;
}
.main-nav li{
    float: left;
    margin-left: 26px;
}
.main-nav li a{
    font-size: 16px;
}
.main-nav li:hover{
    border-bottom: 2px solid#1e63ac;
}
.product ul{
    margin-top: 20px;
}
.product li {
    width: 24%;
    float: left;
    text-align: center;
    margin-bottom: 30px;
    margin-right: 10px;
}
.product li img {
    width: 100%;
    border: 1px solid #bababa;
    height: 375px;
}
.product li p {
    font-size: 14px;
    color: #000;
    margin-top: 11px;
    height: auto;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
}
.product li:nth-child(4n) {
    margin-right: 0;
}
.stpx{
       
    width: 100%;
    overflow: hidden;
}
@media screen and (max-width: 1024px) and (min-width: 0px) {
    .product li {
        width: 100%;
        float: left;
        text-align: center;
        margin-bottom: 30px;
        margin-right: 10px;
    }
    .product li img {
        width: 100%;
        border: 1px solid #bababa;
        height: auto;
    }
}