/*product*/
.product {
  margin-bottom: 45px;
}
.product_txt{margin-top:100px;margin-bottom:65px;text-align:center;color:#777777;}
.product_txt1{font-size:45px;font-weight:bold;margin-bottom:40px;}
.product_txt2{font-size:16px;}
@media (min-width:992px) {
  .product.menu container {height:140px;}
  .menu ul li{margin:0 20px;margin-top:60px;}
}
.menu ul{position:relative;float:left;left:50%;}
.menu ul li div {
    padding-bottom: 10px;
}
.menu ul li a, .menu ul li a:hover {
    color: #666666;
}
.line {
    width: 100%;
    height: 1px;
    background: #dedede;
}
@media (min-width: 992px)
.case_list {
    margin-top: 80px;
}
.menu ul li {
    position: relative;
    float: left;
    left: -50%;
    margin: 0 9px;
    font-size: 14px;
    color: #666666;
    overflow: hidden;
    margin-top: 30px;
    cursor: pointer;
}