.banner-img{position:relative;width:694px;height:450px;margin-top:50px;}
.installed{width:1200px;margin:auto;}
.installed{width:1200px;margin:auto;}
.installed-top{font-size:14px;margin-top:25px;margin-bottom:35px;}
.installed-top span{margin-right:10px;font-size:14px;color:#666666;}
.installed-top a{font-size:14px;color:#666666;margin-right:10px;}
.installed-top a:hover{color:#3d73ed;}
.installed-main{width:100%;}
.installed-main hr{margin-top:10px;border:1px solid #3d73ed;}
.installed-main:after{content:".";display:block;height:0;line-height:0;visibility:hidden;clear:both;}
.installed-main{zoom:1;}
article{width:890px;display:inline-block;}
aside{display:inline-block;vertical-align:top;float:right;}
.installed-main-top{background:#F7F7F7;height:60px;margin-bottom:15px;width:887px;}
.installed-main-top span{display:inline-block;line-height:57px;width:175px;text-align:center;font-size:18px;font-weight:normal;border-top:#F7F7F7 3px solid;cursor:pointer;float:left;margin-left:3px;}
.installed-main-top span:nth-child(1){margin-left:0px;}
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.installed-main-top span:nth-child(4) .hoveri0{display:inline-block;width:24px;height:22px;margin-right:10px;vertical-align:text-top;background:url(../img/course_win7xp.png)no-repeat;background-position:-2px 0px;}
.installed-main-top span:nth-child(5) .hoveri0{display:inline-block;width:22px;height:22px;margin-right:10px;vertical-align:text-top;background:url(../img/course_backups.png)no-repeat;background-position:-4px 0px;}
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.installed-main-top span:nth-child(5) .hoveri1{display:inline-block;display:none;width:22px;height:22px;margin-right:10px;vertical-align:text-top;background:url(../img/course_backups.png)no-repeat;background-position:-26px 0px;}
.installed-main-content{width:100%;}
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.installed-main-content>div:hover{box-shadow:0px 0px 20px 1px rgba(57,57,57,0.1);border-bottom:1px solid #3d73ed;}
.installed-main-content>div>a>img{width:300px;height:170px;vertical-align:top;margin-top:30px;margin-left:5px;}
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.installed-main-content>div .posi{position:relative;}
.installed-main-content>div .answer{position:absolute;width:90px;top:-8px;}
.installed-main-content>div .answer img{margin-right:10px;vertical-align:bottom;}
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.installed-main-content>div>div>div:nth-child(2) span:nth-child(1){margin-right:10px;}
.installed-main-content p{font-size:14px;line-height:27px;color:#666666;margin-top:10px;height:54px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
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.installed-main-content-span span{display:inline-block;color:#999999;font-size:14px;}
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.installed-main-content-span .down{font-size:14px;padding:5px 12px;background-color:#3d73ed;color:#fff;}
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.installed-details-top>span:nth-child(3){font-size:13px;width:20%;text-align:right;}
.installed-details-top>span:nth-child(4){font-size:13px;width:20%;text-align:right;}
.installed-details-top>span:nth-child(4) img{margin-right:10px;vertical-align:bottom;}
.installed-details-top>span:nth-child(5){font-size:13px;width:12%;text-align:right;}
.installed-details-top>span:nth-child(5) img{margin-right:10px;vertical-align:initial;}
.installed-details-top>span:nth-child(6) em{font-size:13px;font-style:normal;margin-left: 4px;}
.installed-details-top>.answer{margin-left:35px;}
.installed-details-top>.answer img{margin-right:10px;vertical-align:bottom;}
.installed-details-center{padding-bottom:30px;}
.installed-details-center h3{margin:10px 0;line-height:35px;height:35px;background:#f3f2f5;border-left:5px solid #3d73ed;padding-left:10px;color:#3d73ed;}
.installed-details-center>div{margin-top:20px;}
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.installed-details-center p{width:860px;margin:auto;font-size:16px;font-weight:normal;line-height:30px;color:#666666;margin:10px 15px 0;}
.installed-details-center .h4{width:821px;margin:auto;margin-top:30px;text-align:left;font-weight:900;}
.installed-details-center .h6{width:107px;height:25px;background-color:#3d73ed;border-radius:0px 13px 13px 0px;text-align:center;font-size:14px;font-weight:normal;line-height:25px;color:#fff;margin-top:35px;}
.installed-details-center img{display:block;margin:20px auto;box-shadow:0px 0px 20px 0px rgba(57,57,57,0.12);max-width:75%;max-height:300px;width:auto;height:auto;border:1px solid #3d73ed;}
.installed-details-center .p1{margin-top:30px;}
.installed-details-center .p1 a{display:inline-block;width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.installed-details-center .p1 a:nth-child(2){float:right;text-align:right;}
.installed-details-center .p1 a:hover{color:#3d73ed;}
.subtype{display:flex;width:282px;flex-wrap:wrap;margin:10px 0;}
.subtype li{float:left;width:47%;padding-right:3%;overflow:hidden;}
.subtype li a{width:unset;font-size:13px;color:#777;border:1px solid #dedede;background-color:#fff;display:block;height:32px;line-height:32px;margin-bottom:18px;text-align:center;}
aside>nofollow>a{display:inline-block;width:282px;height:201px;background:url(../img/video_Downloadpictures.png)no-repeat;background-size:100% 100%;}
aside>nofollow>a>span{display:inline-block;width:80px;height:28px;background-color:#ffffff;box-shadow:-1px 2px 4px 0px rgba(58,155,148,0.8);border-radius:7px;font-size:13px;letter-spacing:1px;color:#3d73ed;line-height:28px;text-align:center;margin-top:133px;margin-left:55px;}
aside>nofollow>a:hover span{background:honeydew;}
.aside-div{margin-top:20px;}
.aside-div1{border-left:1px dashed #E6E6E6;width:270px;margin-left:10px;}
.aside-div1>div{position:relative;margin-top:20px;}
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.aside-div1-a img{width:80px;height:70px;}
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.aside-div a{display:inline-block;font-size:14px;width:250px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:top;margin-left:15px;}
.aside-div a:hover{color:#3d73ed;}
.aside-div2{margin-top:20px;}
.aside-div2>div:nth-child(1) .h4{display:inline-block;margin-top:0px;}
.aside-div2>div:nth-child(1) span{display:inline-block;float:right;}
.aside-div2 p{margin-top:20px;}
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.aside-div2>div .h1{font-size:18px;font-weight:normal;letter-spacing:2px;color:#333333;}
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.aside-div2 a{display:inline-block;font-size:14px;width:250px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:top;}
.aside-div2 a:hover{color:#3d73ed;}
.main1{display:none;}
.main2{display:none;}
.main3{display:none;}
.main4{display:none;}
.pre-next{margin:25px 0;}
.pre-next p{font-size:16px;font-weight:normal;line-height:24px;color:#666666;margin:10px 15px 0;}
.pre-next .p1 a{display:inline-block;width:300px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.pre-next .p1 a:nth-child(2){float:right;text-align:right;}
.pre-next .p1 a:hover{color:#3d73ed;}
.pre-next .p1 a{color:#333;}
.news-b{margin-top:20px;}
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.installed-main .news-b span.w840{width:840px;}
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.news-b #news-b>div>span{margin-left:65px;}
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.news-b #news-b a:hover{color:#3d73ed;}
.relatedTutorial{width:100%;padding-top:20px;margin:auto;}
.relatedTutorial>div{width:435px;display:inline-block;margin-left:15px;vertical-align:bottom;}
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.relatedTutorial-a>a span{font-size:12px;}
.relatedTutorial-a a:hover .h5{color:#3d73ed;}
.installed-details-center a{color:#3d73ed;}