/* .bg-gry {
          background-color: #f3f3f3;
      
        } */
        .model1 {
            padding: 3rem;
            /* background-color: #f3f3f3; */
        }

        /* .model2,
        .model3 {
          background-color: #f3f3f3;
        } */
        .model2,
        .model3 h1 {
            padding-bottom: 2rem;
            padding-top: 2rem;
            margin-top: 0;
        }

        .model1 table {
            border-collapse: collapse;
            border-spacing: 0;
            width: 100%;
            border: none;
        }

        .model1 tbody {
            color: #5d5d5d;
            font-weight: 700;
        }

        .model1-h1 {
            font-family: Opensans-Regular;
            font-weight: normal;
            color: #5d5d5d;
            text-align: center;
        }

        h1 {
            font-family: Opensans-Regular;
            font-weight: normal;
            color: #5d5d5d;
            text-align: center;
        }

        .model1 tr {
            /* background: #f3f3f3;  */
            border-bottom-width: 0;
            text-align: center;
            height: 2.2rem;
            border-bottom: 1px solid #c9c9c9;
        }

        .model1 tr>td:first-child {
            width: 30%
        }

        .img100 {
            width: 100%;
        }

        .img50 {
            width: 50%;
            float: left;
        }
        .lst{
            list-style-type: none!important;
        }
        .lst a {
            text-decoration: none;
        }
        .nav-tabs>li.active>a, .nav-tabs>li.active>a:focus, .nav-tabs>li.active>a:hover {
            color: #555;
            cursor: default;
            background-color: #fff;
            border: 1px solid #ddd;
            border-bottom-color: transparent;
        }
        .nav-tabs>li>a {
            margin-right: 2px;
            line-height: 1.5;
            border-radius: 4px 4px 0 0;
        }
        .nav>li>a {
            position: relative;
            display: block;
            padding: 10px 10px;
        }

/* yixiashibootstrapzidaideshezhi */

            .nav-tabs{border-bottom:1px solid #ddd}.nav-tabs>li{float:left;margin-bottom:-1px}.nav-tabs>li>a{margin-right:2px;line-height:1.42857143;border:1px solid transparent;border-radius:4px 4px 0 0}.nav-tabs>li>a:hover{border-color:#eee #eee #ddd}.nav-tabs>li.active>a,.nav-tabs>li.active>a:focus,.nav-tabs>li.active>a:hover{color:#555;cursor:default;background-color:#fff;border:1px solid #ddd;border-bottom-color:transparent}.nav-tabs.nav-justified{width:100%;border-bottom:0}.nav-tabs.nav-justified>li{float:none}.nav-tabs.nav-justified>li>a{margin-bottom:5px;text-align:center}.nav-tabs.nav-justified>.dropdown .dropdown-menu{top:auto;left:auto}@media (min-width:768px){.nav-tabs.nav-justified>li{display:table-cell;width:1%}.nav-tabs.nav-justified>li>a{margin-bottom:0}}.nav-tabs.nav-justified>li>a{margin-right:0;border-radius:4px}.nav-tabs.nav-justified>.active>a,.nav-tabs.nav-justified>.active>a:focus,.nav-tabs.nav-justified>.active>a:hover{border:1px solid #ddd}@media (min-width:768px){.nav-tabs.nav-justified>li>a{border-bottom:1px solid #ddd;border-radius:4px 4px 0 0}.nav-tabs.nav-justified>.active>a,.nav-tabs.nav-justified>.active>a:focus,.nav-tabs.nav-justified>.active>a:hover{border-bottom-color:#fff}}.nav-pills>li{float:left}.nav-pills>li>a{border-radius:4px}.nav-pills>li+li{margin-left:2px}.nav-pills>li.active>a,.nav-pills>li.active>a:focus,.nav-pills>li.active>a:hover{color:#fff;background-color:#337ab7}.nav-stacked>li{float:none}.nav-stacked>li+li{margin-top:2px;margin-left:0}.nav-justified{width:100%}.nav-justified>li{float:none}.nav-justified>li>a{margin-bottom:5px;text-align:center}.nav-justified>.dropdown .dropdown-menu{top:auto;left:auto}@media (min-width:768px){.nav-justified>li{display:table-cell;width:1%}.nav-justified>li>a{margin-bottom:0}}.nav-tabs-justified{border-bottom:0}.nav-tabs-justified>li>a{margin-right:0;border-radius:4px}.nav-tabs-justified>.active>a,.nav-tabs-justified>.active>a:focus,.nav-tabs-justified>.active>a:hover{border:1px solid #ddd}@media (min-width:768px){.nav-tabs-justified>li>a{border-bottom:1px solid #ddd;border-radius:4px 4px 0 0}.nav-tabs-justified>.active>a,.nav-tabs-justified>.active>a:focus,.nav-tabs-justified>.active>a:hover{border-bottom-color:#fff}}.tab-content>.tab-pane{display:none}.tab-content>.active{display:block}.nav-tabs .dropdown-menu{margin-top:-1px;border-top-left-radius:0;border-top-right-radius:0}
            .tab-content>.tab-pane{display:none}.tab-content>.active{display:block}.nav-tabs .dropdown-menu{margin-top:-1px;border-top-left-radius:0;border-top-right-radius:0}

<!-- wenluxuanzetupiandaxiaoshiying -->
   .weave-width {
        width: 65%;
        position: relative;
        left: 50%;
        top: 50%;
        transform: translate(-50%, 0);
    }
    @media (max-width: 1000px) {
        .weave-width {
            width: 100%;
        }
}
<!-- shipaituhezhuangchetudekuandu -->
    .model2 , .model3 {
        position: relative;
        text-align: center;
    }
    .model2 img, .model3 img{
        
        position: relative;
    }
<!-- 
    @media (max-width: 1000px) {
    .model2 img, .model3 img{
        width: 100%;
    }
}
 -->
    .model2 , .model3 {
     text-align: center;
    }
.nav-tabs {
    border-bottom: none; 
}