@media screen and (max-width: 640px)
{
    .w1200
    {
        width: 100%;
    }
    .top-message, header, .banner, .index-Special-box, .index-news-box, .index-intro-box, footer
    {
        min-width: inherit;
    }
    .index-media-box, footer .w1200, .banner-control-box
    {
        display: none;
    }
    footer
    {
        padding: 0;
    }
    .index-news-half
    {
        width: 100%;
    }
    .logo
    {
        float: none;
    }
    .logo img
    {
        max-width: 200px;
        margin-left: 5%;
    }
    nav
    {
        float: none;
        position: fixed;
        width: 100%;
        height: 100%;
        left: 0;
        top: 0;
        background: rgba(0,0,0,.9);
        z-index: 10;
        display: none;
    }
    .nav
    {
        float: none;
        overflow-y: auto;
        height: 85%;
        padding-top: 13%!important;
    }
    .nav-li
    {
        width: 100%;
        float: none;
        height: auto;
        line-height: normal;
    }
    .nav-li>a
    {
        color: #fff;
        line-height: 30px;
        display: block;
        height: 30px;
        padding: 2% 5%;
    }
    .nav-li:last-of-type
    {
        display: none;
    }
    .sub-nav
    {
        position: relative;
        width: 90%;
        left: 0;
        top: auto;
        margin-left: 0;
        background: #161616;
        border-top: 0;
        padding-left: 10%;
    }
    .nav-li:hover .sub-nav
    {
        display: none;
    }
    .nav-li>a:hover
    {
        color: #fff;
    }
    .sub-nav-li
    {
        border-bottom: 0;
    }
    .sub-nav-li a
    {
        text-align: left;
        color: #fff;
    }
    .app-nav-close
    {
        position: absolute;
        font-size: 28px;
        top: 2%;
        right: 2%;
        color: #fff;
        font-family: '宋体';
        width: 45px;
        height: 45px;
        line-height: 45px;
        text-align: center;
        z-index: 10;
        display: block;
    }
    .banner
    {
        height: 331px;
    }
    .banner-li
    {
        height: 185px;
    }
    .banner-li img
    {
        height: 185px;
    }
    .banner-li a
    {
        position: relative;
        width: 100%;
        margin-left: 0;
        margin-top: 0;
        left: 0;
        top: 0;
    }
    .banner-suspend
    {
        position: absolute;
        width: 100%;
        left: 0;
        margin-left: 0;
        box-sizing: border-box;
    }
    .banner-suspend-txtBox
    {
        display: none;
    }
    .index-title
    {
        width: 30%;
        font-size: 24px;
    }
    .index-title-hr
    {
        width: 35%;
    }
    .banner-suspend-row .fr
    {
        float: none;
    }
    .Special-fl, .Special-fr
    {
        float: none;
        display: block;
        width: 100%;
    }
    .Special-logo-li
    {
        width: 50%;
        height: auto;
    }
    .Special-logo
    {
        padding: 30px 0;
        height: 100px;
    }
    .index-Special-box, .index-intro-box
    {
        height: auto;
        background-size: cover;
    }
    .index-Special-box
    {
        display: block;
    }
    .index-Special-box2
    {
        display: none;
    }
    .Special-logo-chaining
    {
        padding: 0;
    }
    .Special-logo-name2
    {
        padding: 0;
        font-size: 14px;
    }
    .Special-logo-mun
    {
        position: relative;
        bottom: 0;
        font-size: 14px;
    }
    .Special-logo-name
    {
        font-size: 14px;
    }
    .index-news-li
    {
        width: 90%;
        padding: 5%;
        text-align: center;
    }
    .index-news-img>a>img
    {
        max-width: 100%;
        height: auto;
    }
    .index-news-img, .index-news-img>a
    {
        width: 100%;
        height: auto;
    }
    .index-news-txt
    {
        height: auto;
        margin-bottom: 10px;
    }
    .index-intro-txt
    {
        padding: 0 5%;
    }
    .index-intro-information
    {
        width: 33.33%;
        padding: 0;
        float: left;
    }
    .index-intro-information-box
    {
        overflow: hidden;
    }
    .index-news-title-box
    {
        padding: 2% 5%;
    }
    .idnex-activity
    {
        display: none;
    }
    .index-activity-txt-box
    {
        width: 100%;
    }
    .index-activity-matter
    {
        padding: 5%;
        margin-top: 0;
    }
    .index-activity-txt
    {
        height: auto;
        min-height: inherit;
    }
    .index-activity-box
    {
        padding-bottom: 5%;
    }
    .top-message-txt
    {
        margin-right: 5%;
    }
    .app-nav-ico
    {
        display: block;
        position: absolute;
        right: 3%;
        top: 40%;
        line-height: 0;
    }
    .app-nav-ico i
    {
        font-size: 30px;
    }
    .app-nav-ico img
    {
        width: 42px;
    }
    header
    {
        position: relative;
    }
    .banner-btn
    {
        height: 45px;
        line-height: 45px;
        font-size: 22px;
    }
    .banner-btn>i
    {
        width: 26px;
        height: 26px;
        margin-bottom: -5px;
    }
    .banner-exhibitors
    {
        margin-bottom: 20px;
    }
    .banner-suspend
    {
        padding: 18px 30px;
    }
    .Special-logo-li:nth-of-type(2n):after
    {
        display: none;
    }
    .Special-logo-li:last-of-type:after
    {
        display: block;
    }
    .sidebar.fl
    {
        display: none;
    }
    .main
    {
        width: 100%;
        margin: 0;
        box-sizing: border-box;
        min-height: inherit;
    }
    .fr.sidebar
    {
        width: 100%;
    }
    .content.w1200
    {
        margin-bottom: 0;
    }
    .sidebar-subscription-input
    {
        width: 80%;
    }
    .sidebar-subscription-btn
    {
        width: 20%;
    }
    .video_wrap #videohome, #videohome_displayarea, #videohome_jwplayer_display_image, #videohome_jwplayer_display_text, #videohome_jwplayer_display
    {
        width: 100%!important;
        height: 200px!important;
    }
    .video_wrap
    {
        width: 100%;
    }
    #videohome_video
    {
        width: 100%!important;
        height: auto!important;
    }
    .download-li
    {
        float: none;
        margin: 3% auto;
    }
    .activity-li
    {
        margin: 3% auto;
        float: none;
    }
    .activity
    {
        padding: 0 2%;
    }
    .exhibition-checkbox-li
    {
        width: 100%;
        padding: 5px 0;
    }
    .exhibition-piece
    {
        margin-bottom: 3%;
    }
    .exhibition-input-r
    {
        padding: 0;
    }
    .exhibition-input-li
    {
        margin: 3% 0;
    }
    .exhibition-input, .exhibition-select
    {
        width: 100%!important;
        margin-bottom: 3%!important;
    }
    .exhibition-input-title
    {
        width: 100%;
    }
    .uploading-logo
    {
        float: none;
        margin: 0 auto;
    }
    .uploading-logo-r
    {
        padding-left: 0;
    }
    .uploading-logo-btn input
    {
        left: 0;
    }
    .uploading-logo-btn
    {
        margin: 2% auto;
    }
    .Booth-tab td
    {
        padding: 15px;
    }
    .Booth-tab-input
    {
        margin: 5px 0;
    }
    .news-img-box
    {
        width: 100%;
        float: none;
        text-align: center;
    }
    .news-txt-box
    {
        padding: 0;
    }
    .news-img-box img
    {
        height: auto!important;
        width: auto!important;
    }
    .news-li
    {
        padding: 20px 0;
    }
    .partner-li
    {
        width: 48%;
        margin-left: 0;
        margin-right: 4%;
        margin-bottom: 2%;
        margin-bottom: 2%;
    }
    .partner-li:nth-of-type(2n)
    {
        margin-right: 0;
    }
    .partner-li>a>img
    {
        max-width: 90%;
    }
    .online-search-select, .online-search-input, .online-search-btn
    {
        width: 100%;
        margin-bottom: 2%;
    }
    .online-rank a
    {
        float: left;
    }
    .online-logo
    {
        width: 100%;
        float: none;
    }
    .online-txtbox
    {
        padding-left: 0;
    }
    .booth-number
    {
        float: none;
        width: 100%;
    }
    .online-logo-txt
    {
        padding-right: 0;
    }
    .online-logo a img
    {
        max-width: 100%;
        max-height: 100%;
    }
    .Contact-top-txt, .Contact-half
    {
        width: 100%;
    }
    .Contact-row, .Contact-top
    {
        padding: 30px 3%;
    }
    .w1140
    {
        width: 100%;
        min-width: inherit;
    }
    .index-btn
    {
        width: 100%;
        font-size: 20px;
        height: 73px;
        line-height: 73px;
    }
    .index-btn-ico
    {
        width: 32px;
        height: 32px;
        margin-bottom: -10px;
    }
    .index-btn-ico img
    {
        width: 32px;
        height: 32px;
    }
    .index-btn-box
    {
        height: 73px;
        width: 100%;
        float: none;
    }
    .index-video
    {
        width: 100%;
        float: none;
    }
    .index-countdown-row
    {
        padding-left: 0;
        padding: 5% 0;
    }
    .countdown-title
    {
        font-size: 20px;
        line-height: 32px;
    }
    .countdown-name
    {
        display: block;
    }
    .countdown-box
    {
        height: auto;
    }
    .countdown
    {
        margin-left: 0;
        margin-right: 18px;
        width: 50px;
        background-size: 100% 100%;
    }
    .countdown-unit
    {
        margin-left: -18px;
    }
    .index-activity-half
    {
        width: 100%;
        height: auto;
    }
    .index-activity-half .index-activity-txt-box
    {
        width: 100%;
        padding: 5%;
        text-align: center;
        box-sizing: border-box;
    }
    .index-activity-title
    {
        margin: 15px 0;
    }
    .index-news-exhibition-box
    {
        display: none;
    }
    .index-row
    {
        padding: 5%;
    }
    .index-activity-img-row
    {
        float: none;
        margin: 15px auto;
    }
    .index-news-box
    {
        margin-bottom: 20px;
    }
    .index-activity-box
    {
        height: auto;
        background-size: cover;
    }
    .index-news
    {
        width: 100%;
        float: none;
        box-sizing: border-box;
        padding: 5%;
        margin-right: 0;
    }
    nav
    {
        min-width: inherit;
    }
    .nav-li .nav-iconfont
    {
        line-height: 30px;
        padding-left: 5%;
    }
    .index-activity-img-row
    {
        width: 100%;
    }
    .index-activity-img-li, .index-previous-img-li
    {
        width: 10%;
    }
    .index-previous-img-li img
    {
        width: 100%;
        height: auto;
    }
    .nav-li>a:hover, .nav-li.current>a
    {
        color: #fff;
    }
    .profile-txt
    {
        float: none!important;
        width: auto!important;
    }
    .review-list-group .list-group-item
    {
        height: auto;
    }
    .ke-zeroborder
    {
        width: 100%!important;
    }
    .index-intro-information
    {
        width: 50%;
    }
    .sidebar .sidebar-box:first-of-type
    {
        display: none;
    }
    .demand-top
    {
        padding: 5%;
    }
    .demand-top-name
    {
        float: none;
    }
    .demand-top-text
    {
        padding-left: 0;
    }
    .demand-form-li
    {
        float: none;
        width: 100%;
        padding: 0 5%;
        margin-bottom: 5%;
    }
    .demand-btn-box
    {
        padding: 5% 0;
        margin: 0 5%;
    }
    .demand-form-row
    {
        margin-bottom: 5%;
    }
}