.MPreview-box {
    position: relative;
    border: 1px solid #DDD;
    background: #FFF;
    width: 100%;
    height: 800px;
    font-size: 12px;
    line-height: 1.6;
    color: #333;
    font-family: "Microsoft Yahei",Arial;
    background: #f2f2f2
}

.MPreview-mediaPlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden
}

.MPreview-box img {
    vertical-align: top;
    margin: 0;
    padding: 0;
    border: 0
}

.MPreview-box .hidden {
    display: none
}

.MPreview-box .invisible {
    visibility: hidden
}

.MPreview-box .cle {
    display: block;
    height: 0;
    overflow: hidden;
    clear: both
}

.MPreview-box .clefix:after,.MPreview-ppt .MPreview-mediaView:after {
    content: '\20';
    display: block;
    height: 0;
    clear: both
}

.MPreview-box .clefix,.MPreview-ppt .MPreview-mediaView {
    *zoom:1}

.MPreview-box .tool-bar {
    position: absolute;
    top: 5px;
    right: 0;
    z-index: 101;
    -webkit-user-select: none;
    -moz-user-select: none
}

.MPreview-box .MPreview-mediaPlay {
    width: 100%;
    overflow: hidden;
    -webkit-user-select: none;
    -moz-user-select: none;
    background: url(../images/loading.gif) no-repeat center center;
    padding-top: 50px;
    box-sizing: border-box
}

.MPreview-box .MPreview-mediaView {
    width: 100%;
    text-align: center
}

.MPreview-box .MPreview-mediaView img {
    max-width: calc(95% - 17px);
    margin-left: -17px;
    border-bottom: 10px solid #f2f2f2;
    box-sizing: border-box
}

.MPreview-box .tool-bar ul {
    padding-right: 28px;
    margin: 0;
    padding-left: 0
}

.MPreview-box .tool-bar ul li {
    float: left;
    display: inline;
    margin: 0 10px
}

.MPreview-box .tool-bar ul li a {
    display: block;
    padding: 1px 7px 5px 1px;
    border: 1px solid transparent;
    border-radius: 3px
}

.MPreview-box .tool-bar ul li a:hover {
    border-color: #DDD
}

.MPreview-box .tool-bar ul li a span {
    position: relative;
    top: 3px;
    left: 3px;
    display: block;
    overflow: hidden;
    width: 32px;
    height: 32px;
    text-indent: -9999px;
    font: 0 a
}

.MPreview-box .MPreview-zoomBig span,.MPreview-box .MPreview-zoomSmall span,.MPreview-box .MPreview-viewOne span,.MPreview-box .MPreview-viewMulti span,.MPreview-box .MPreview-fullScreen span,.MPreview-box .MPreview-exit span,.MPreview-box .MPreview-pagePrev span,.MPreview-box .MPreview-pageNext span,.MPreview-box .MPreview-arrowTop span,.MPreview-box .MPreview-arrowBottom span {
    background: url(../images/media_icon.png) no-repeat -9999px -9999px
}

.MPreview-box .MPreview-fullScreen span {
    background: url(../images/full_icon.png) no-repeat -9999px -9999px
}

.MPreview-box .MPreview-zoomBig span {
    background-position: 0 -78px
}

.MPreview-box .MPreview-zoomSmall span {
    background-position: -23px -78px
}

.MPreview-box .MPreview-viewOne span {
    background-position: 1px -23px
}

.MPreview-box .MPreview-viewMulti span {
    background-position: -22px -23px
}

.MPreview-box .MPreview-fullScreen span {
    background-position: -20px -92px
}

.MPreview-box .MPreview-exit span {
    background-position: -20px -20px
}

.MPreview-box .MPreview-pagePrev span {
    background-position: -82px -55px
}

.MPreview-box .MPreview-pageNext span {
    background-position: -82px -80px
}

.MPreview-box .MPreview-zoomBig.current span {
    background-position: 0 -50px
}

.MPreview-box .MPreview-zoomSmall.current span {
    background-position: -23px -50px
}

.MPreview-box .MPreview-viewOne.current span {
    background-position: 1px 2px
}

.MPreview-box .MPreview-viewMulti.current span {
    background-position: -22px 3px
}

.MPreview-box .MPreview-fullScreen:hover span,.MPreview-box .MPreview-fullScreen.current span {
    background-position: -20px -92px
}

.MPreview-box .MPreview-exit:hover span,.MPreview-box .MPreview-exit.current span {
    background-position: -20px -20px
}

.MPreview-box .MPreview-pagePrev.current span {
    background-position: -55px -55px
}

.MPreview-box .MPreview-pageNext.current span {
    background-position: -55px -80px
}

.MPreview-box .MPreview-arrowTop span {
    background-position: -122px -5px
}

.MPreview-box .MPreview-arrowBottom span {
    background-position: -122px -48px
}

.MPreview-box .MPreview-scrollBar {
    display: block;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 17px;
    border-left: 1px solid #DDD;
    z-index: 102;
    background-color: #fff;
    box-shadow: 2px 0 5px -4px
}

.MPreview-box .MPreview-scrollBar .MPreview-scrollBtn {
    z-index: 40;
    cursor: default;
    border-radius: 5px;
    position: absolute;
    top: 5px;
    left: 3px;
    width: 9px;
    min-height: 20px;
    background: #DDD;
    border: 1px solid #ccc
}

.MPreview-box .MPreview-scrollBar .MPreview-scrollBtn:active,.MPreview-box .MPreview-scrollBar .MPreview-scrollBtn.current {
    box-shadow: 0 0 5px rgba(0,0,0,0.2)
}

.MPreview-box .page-bar {
    position: absolute;
    z-index: 100;
    height: 30px;
    width: calc(100% - 18px);
    background: #fff;
    padding: 10px 0;
    -webkit-user-select: none;
    -moz-user-select: none;
    box-shadow: 0 2px 6px -4px;
    box-sizing: content-box
}

.MPreview-box .page-bar .page-bar-inner {
    padding-top: 2px;
    float: right;
    margin-right: 70px;
    width: 190px
}

.MPreview-box .page-bar .page-bar-inner a {
    float: left;
    display: inline;
    margin: 0 10px;
    overflow: hidden;
    border: 1px solid transparent;
    width: 16px;
    height: 14px;
    padding: 5px;
    border-radius: 3px;
    box-sizing: content-box
}

.MPreview-box .page-bar .page-bar-inner a:hover {
    border: 1px solid #333
}

.MPreview-box .page-bar .page-bar-inner a span {
    display: block;
    overflow: hidden;
    width: 16px;
    height: 14px;
    text-indent: -9999px;
    font: 0 a
}

.MPreview-box .page-bar .MPreview-pageInput {
    float: left;
    background: #FFF;
    border: 1px solid #DDD;
    color: #666;
    border: 0;
    text-align: center;
    margin: 0;
    width: 30px;
    height: 16px;
    line-height: 16px;
    padding-top: 3px;
    padding-bottom: 2px;
    font-size: 14px;
    outline: 0;
    -webkit-user-select: none;
    -moz-user-select: none;
    border: 1px solid #999;
    margin-right: 10px;
    margin-top: 2px;
    border-radius: 5px;
    box-sizing: content-box
}

.MPreview-box .page-bar .MPreview-pageCount {
    float: left;
    width: 30px;
    text-align: center;
    color: #666;
    font-size: 14px;
    display: none
}

.MPreview-box .page-bar .MPreview-pageCount em {
    font-style: normal;
    color: #666;
    vertical-align: text-top
}

.MPreview-PageNum {
    position: absolute;
    left: 10px;
    top: 10px;
    color: #fff;
    z-index: 100;
    background: rgba(0,0,0,0.5);
    font-size: 14px;
    border-radius: 20px;
    height: 30px;
    line-height: 30px;
    min-width: 70px;
    text-align: center
}

.MPreview-PageNum span {
    color: #fff;
    margin: 0 5px
}

.MPreview-Btn {
    float: left;
    padding: 3px;
    width: 50px;
    font-size: 14px;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    outline: 0;
    background-color: rgba(0,0,0,0.5);
    color: #fff;
    border: 0;
    border-radius: 20px;
    margin-top: 2px
}

.MPreview-Btn:hover {
    background-color: rgba(0,0,0,0.6)
}

.MPreview-Btn:active {
    background-color: rgba(0,0,0,0.6);
    transform: translateY(1px)
}

.MPreview-box .MPreview-arrowUp,.MPreview-box .MPreview-arrowDown {
    position: absolute;
    width: 100%;
    height: 30px;
    top: 10px;
    left: 0;
    z-index: 25;
    *background: url(about:blank) no-repeat
}

.MPreview-box .MPreview-arrowUp {
    top: 50px
}

.MPreview-box .MPreview-arrowDown {
    top: auto;
    bottom: 5px
}

.MPreview-box .MPreview-arrowUp div,.MPreview-box .MPreview-arrowDown div {
    display: none;
    margin: 0 auto;
    width: 61px;
    height: 30px;
    overflow: hidden;
    font: 0 a;
    text-indent: -9999px;
    width: 61px;
    height: 100%;
    margin: 0 auto;
    overflow: hidden
}

.MPreview-box .MPreview-arrowUp span,.MPreview-box .MPreview-arrowDown span {
    cursor: pointer;
    display: block;
    width: 100%;
    height: 100%
}

.MPreview-box .MPreview-arrowUp a:hover,.MPreview-box .MPreview-arrowDown a:hover, {
    opacity: .8;
    filter: alpha(opacity=80)
}

.MPreview-box .media-dual .view {
    float: left;
    width: 50%
}

.MPreview-ppt .MPreview-mediaPlay {
    bottom: 51px
}

.MPreview-ppt .MPreview-mediaView {
    width: auto;
    height: 100%;
    text-align: left;
    -webkit-transition: all .5s;
    transition: all .5s
}

.MPreview-ppt .MPreview-mediaView div {
    float: left;
    text-align: center;
    width: 100%;
    height: 100%;
    background: #FFF url(../images/loading.gif) no-repeat center center
}

.MPreview-ppt .MPreview-mediaView img {
    max-width: 100%;
    max-height: 100%
}

.MPreview-ppt .tool-bar {
    width: 50px
}

.MPreview-ppt .MPreview-scrollBar {
    top: auto;
    bottom: 25px;
    width: 100%;
    height: 15px;
    border-left: 0 none;
    border-top: 1px solid #DDD
}

.MPreview-ppt .MPreview-scrollBar .MPreview-scrollBtn {
    top: -6px;
    left: 5px;
    height: 9px;
    width: auto;
    min-width: 20px;
    min-height: 9px
}

.MPreview-ppt .MPreview-arrowUp,.MPreview-ppt .MPreview-arrowDown {
    width: 30px;
    height: 100%;
    top: 0;
    left: 10px
}

.MPreview-ppt .MPreview-arrowDown {
    top: 0;
    bottom: auto;
    left: auto;
    right: 10px
}

.MPreview-ppt .MPreview-arrowUp div,.MPreview-ppt .MPreview-arrowDown div {
    position: absolute;
    top: 50%;
    margin-top: -30px;
    width: 30px;
    height: 61px
}

.MPreview-ppt .MPreview-arrowUp span,.MPreview-ppt .MPreview-arrowDown span {
    width: 30px;
    height: 61px
}

.MPreview-ppt .MPreview-arrowUp span {
    background-position: -206px 0
}

.MPreview-ppt .MPreview-arrowDown span {
    background-position: -249px 0
}

/*!
 * Viewer v1.1.0
 * https://fengyuanchen.github.io/viewer
 *
 * Copyright 2015-present Chen Fengyuan
 * Released under the MIT license
 *
 * Date: 2019-12-14T11:48:37.240Z
 */
.viewer-zoom-in::before,.viewer-zoom-out::before,.viewer-one-to-one::before,.viewer-reset::before,.viewer-prev::before,.viewer-play::before,.viewer-next::before,.viewer-rotate-left::before,.viewer-rotate-right::before,.viewer-flip-horizontal::before,.viewer-flip-vertical::before,.viewer-fullscreen::before,.viewer-fullscreen-exit::before,.viewer-close::before {
    background-image: url('data:image/png;base64,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');
    background-repeat: no-repeat;
    background-size: 280px;
    color: transparent;
    display: block;
    font-size: 0;
    height: 20px;
    line-height: 0;
    width: 20px
}

.viewer-zoom-in::before {
    background-position: 0 0;
    content: 'Zoom In'
}

.viewer-zoom-out::before {
    background-position: -20px 0;
    content: 'Zoom Out'
}

.viewer-one-to-one::before {
    background-position: -40px 0;
    content: 'One to One'
}

.viewer-reset::before {
    background-position: -60px 0;
    content: 'Reset'
}

.viewer-prev::before {
    background-position: -80px 0;
    content: 'Previous'
}

.viewer-play::before {
    background-position: -100px 0;
    content: 'Play'
}

.viewer-next::before {
    background-position: -120px 0;
    content: 'Next'
}

.viewer-rotate-left::before {
    background-position: -140px 0;
    content: 'Rotate Left'
}

.viewer-rotate-right::before {
    background-position: -160px 0;
    content: 'Rotate Right'
}

.viewer-flip-horizontal::before {
    background-position: -180px 0;
    content: 'Flip Horizontal'
}

.viewer-flip-vertical::before {
    background-position: -200px 0;
    content: 'Flip Vertical'
}

.viewer-fullscreen::before {
    background-position: -220px 0;
    content: 'Enter Full Screen'
}

.viewer-fullscreen-exit::before {
    background-position: -240px 0;
    content: 'Exit Full Screen'
}

.viewer-close::before {
    background-position: -260px 0;
    content: 'Close'
}

.viewer-container {
    bottom: 0;
    direction: ltr;
    font-size: 0;
    left: 0;
    line-height: 0;
    overflow: hidden;
    position: absolute;
    right: 0;
    -webkit-tap-highlight-color: transparent;
    top: 0;
    -ms-touch-action: none;
    touch-action: none;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none
}

.viewer-container::-moz-selection,.viewer-container *::-moz-selection {
    background-color: transparent
}

.viewer-container::selection,.viewer-container *::selection {
    background-color: transparent
}

.viewer-container img {
    display: block;
    height: auto;
    max-height: none!important;
    max-width: none!important;
    min-height: 0!important;
    min-width: 0!important;
    width: 100%
}

.viewer-canvas {
    bottom: 0;
    left: 0;
    overflow: hidden;
    position: absolute;
    right: 0;
    top: 0
}

.viewer-canvas>img {
    height: auto;
    margin: 15px auto;
    max-width: 90%!important;
    width: auto
}

.viewer-footer {
    bottom: 0;
    left: 0;
    overflow: hidden;
    position: absolute;
    right: 0;
    text-align: center
}

.viewer-navbar {
    background-color: rgba(0,0,0,0.5);
    overflow: hidden
}

.viewer-list {
    -webkit-box-sizing: content-box;
    box-sizing: content-box;
    height: 50px;
    margin: 0;
    overflow: hidden;
    padding: 1px 0
}

.viewer-list>li {
    color: transparent;
    cursor: pointer;
    float: left;
    font-size: 0;
    height: 50px;
    line-height: 0;
    opacity: .5;
    overflow: hidden;
    -webkit-transition: opacity .15s;
    transition: opacity .15s;
    width: 30px
}

.viewer-list>li:hover {
    opacity: .75
}

.viewer-list>li+li {
    margin-left: 1px
}

.viewer-list>.viewer-loading {
    position: relative
}

.viewer-list>.viewer-loading::after {
    border-width: 2px;
    height: 20px;
    margin-left: -10px;
    margin-top: -10px;
    width: 20px
}

.viewer-list>.viewer-active,.viewer-list>.viewer-active:hover {
    opacity: 1
}

.viewer-player {
    background-color: #000;
    bottom: 0;
    cursor: none;
    display: none;
    left: 0;
    position: absolute;
    right: 0;
    top: 0
}

.viewer-player>img {
    left: 0;
    position: absolute;
    top: 0
}

.viewer-toolbar>ul {
    display: inline-block;
    margin: 0 auto 5px;
    overflow: hidden;
    padding: 3px 0
}

.viewer-toolbar>ul>li {
    background-color: rgba(0,0,0,0.5);
    border-radius: 50%;
    cursor: pointer;
    float: left;
    height: 24px;
    overflow: hidden;
    -webkit-transition: background-color .15s;
    transition: background-color .15s;
    width: 24px
}

.viewer-toolbar>ul>li:hover {
    background-color: rgba(0,0,0,0.8)
}

.viewer-toolbar>ul>li::before {
    margin: 2px
}

.viewer-toolbar>ul>li+li {
    margin-left: 1px
}

.viewer-toolbar>ul>.viewer-small {
    height: 18px;
    margin-bottom: 3px;
    margin-top: 3px;
    width: 18px
}

.viewer-toolbar>ul>.viewer-small::before {
    margin: -1px
}

.viewer-toolbar>ul>.viewer-large {
    height: 30px;
    margin-bottom: -3px;
    margin-top: -3px;
    width: 30px
}

.viewer-toolbar>ul>.viewer-large::before {
    margin: 5px
}

.viewer-tooltip {
    background-color: rgba(0,0,0,0.8);
    border-radius: 10px;
    color: #fff;
    display: none;
    font-size: 12px;
    height: 20px;
    left: 50%;
    line-height: 20px;
    margin-left: -25px;
    margin-top: -10px;
    position: absolute;
    text-align: center;
    top: 50%;
    width: 50px
}

.viewer-title {
    color: #ccc;
    display: inline-block;
    font-size: 12px;
    line-height: 1;
    margin: 0 5% 5px;
    max-width: 90%;
    opacity: .8;
    overflow: hidden;
    text-overflow: ellipsis;
    -webkit-transition: opacity .15s;
    transition: opacity .15s;
    white-space: nowrap
}

.viewer-title:hover {
    opacity: 1
}

.viewer-button {
    background-color: rgba(0,0,0,0.5);
    border-radius: 50%;
    cursor: pointer;
    height: 80px;
    overflow: hidden;
    position: absolute;
    right: -40px;
    top: -40px;
    -webkit-transition: background-color .15s;
    transition: background-color .15s;
    width: 80px
}

.viewer-button:focus,.viewer-button:hover {
    background-color: rgba(0,0,0,0.8)
}

.viewer-button::before {
    bottom: 15px;
    left: 15px;
    position: absolute
}

.viewer-fixed {
    position: fixed
}

.viewer-open {
    overflow: hidden
}

.viewer-show {
    display: block
}

.viewer-hide {
    display: none
}

.viewer-backdrop {
    background-color: rgba(0,0,0,0.5)
}

.viewer-invisible {
    visibility: hidden
}

.viewer-move {
    cursor: move;
    cursor: -webkit-grab;
    cursor: grab
}

.viewer-fade {
    opacity: 0
}

.viewer-in {
    opacity: 1
}

.viewer-transition {
    -webkit-transition: all .3s;
    transition: all .3s
}

@-webkit-keyframes viewer-spinner {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg)
    }

    100% {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg)
    }
}

@keyframes viewer-spinner {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg)
    }

    100% {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg)
    }
}

.viewer-loading::after {
    -webkit-animation: viewer-spinner 1s linear infinite;
    animation: viewer-spinner 1s linear infinite;
    border: 4px solid rgba(255,255,255,0.1);
    border-left-color: rgba(255,255,255,0.5);
    border-radius: 50%;
    content: '';
    display: inline-block;
    height: 40px;
    left: 50%;
    margin-left: -20px;
    margin-top: -20px;
    position: absolute;
    top: 50%;
    width: 40px;
    z-index: 1
}

@media(max-width: 767px) {
    .viewer-hide-xs-down {
        display:none
    }
}

@media(max-width: 991px) {
    .viewer-hide-sm-down {
        display:none
    }
}

@media(max-width: 1199px) {
    .viewer-hide-md-down {
        display:none
    }
}