.floor_2 .grid3{text-align: center;}
.floor_2 .grid3 .t{font-size: 30px;margin-bottom: 50px;font-weight: 700;color: #7a7a7a;}
.floor_2 .grid3 .t:after{content: '';border-bottom: #b7b7b7 1px solid;top: 50%;left: 0;right: 0;margin: auto;position: absolute;z-index: 1;}
.floor_2 .grid3 .t span{position: relative;z-index: 100;background-color: #f5f5f5;padding: 0 30px;}
.floor_2 .grid3 .lists1{overflow: hidden;padding-bottom: 30px;}
.floor_2 .grid3 .lists1 ul{margin-left: -10%;margin-right: -5%;}
.floor_2 .grid3 .lists1 li{float: left;font-size: 18px;color: #7a7a7a;text-align: center;width: 24.999%;}
.floor_2 .grid3 .lists1 b{color: #313131;font-size:36px;font-weight: 500;}
.wid1350 {
    max-width: 1350px;
    margin: 0 auto;
}
.about_box4{ display: flex;}
.about_box4 li{ background: #f1f1f1;margin:1rem;padding:2rem 1rem; text-align: center; width: 20%;border-top:3px solid rgb(0 140 214);}
.about_box4 li img{ width: 30%;margin:1rem auto; }
.about_box4 li .img2{ display:none ;}
.about_box4 li .img1{ display:block ;}
.about_box4 li h3{line-height:3rem; text-align: center;font-size: 1.5rem; font-weight:bold;}
.about_box4 li p{line-height:2rem;font-size: 0.9rem; color: #666;}
.about_box4 li span{font-size: 0.9rem; color: #666;}
.about_box4 li:hover{background: rgba(84, 68, 70, 0.75);}
.about_box4 li:hover h3{color:#fff}
.about_box4 li:hover p{color:#fff}
.about_box4 li:hover span{color:#fff}
.about_box4 li:hover .img1{ display: none;}
.about_box4 li:hover .img2{ display: block;}