.ad .ad-nav ul li {
    margin-left: 178px;
    margin-right: 140px;
}
.main-body>div {
    width: 1100px;
    margin: 40px auto 20px;
}
.main-body>div>ul {
    width: 1100px;
    margin: 40px auto 20px;
}
.main-body>div>ul li {
    width: 350px;
    height: 310px;
    float: left;
    margin-bottom: 28px;
    border:1px solid rgba(238,238,238,1);
    color: #6F767D;
}
.main-body>div>ul li a {
    width: 100%;
    height: 100%;
    display: block;
}
.main-body>div>ul li a>img {
    width: 351px;
    height: 219px;
}
.main-body>div>ul li:not(:nth-child(3n)) {
    margin-right: 22px;
}
.main-body>div>ul li .solution-hd {
    display: inline-block;
    margin: 14px 0 7px 11px;
    color: #6F767D;
}
.main-body>div>ul li h4 {
    color: #454A4F;
    margin-left: 11px;
}
.customCl>div{
	width: 1200px !important;
	display:flex;
	justify-content: center;
}