.cl{clear:both; overflow:hidden; }
.blank5{height:5px; clear:both; overflow:hidden}
.blank10{height:10px; clear:both; overflow:hidden;}
.main{width:1200px; margin:0 auto; position:relative }
.main_head{width:1200px; margin:0 auto;  }
.fl{ float:left}.fr{ float:right}
.center{ text-align:center}
.main{ width:1200px; margin:0 auto;}
.blank10{ height:10px; overflow:hidden; clear:both; display:block; width:100%}
.ai_banner{background:url(banner.jpg?v=1.0.2) no-repeat center; width:100%; height:500px;}
.ai_2020_title{ font-size:40px; padding:50px 0 25px; text-align:center; color:#000 }
.ai_2020_workBox{overflow:hidden;background:#f5f5f5;margin:30px 0 0 0;padding:0px 0 50px}
.ai_2020_workBox .hd{margin:0 0 10px 0; clear:both; display:block;}
.ai_2020_workBox .hd ul{ position:relative; width:1230px}
.ai_2020_workBox .hd ul li{ float:left; width:111px;background:#ddd;color:#666;height:50px;line-height:50px;margin:0 10px 0 0;font-size:13px;border-radius:4px;cursor:pointer;position:relative; text-align:center}
.ai_2020_workBox .hd ul li.on{background:#0692e7; color:#fff}
.ai_2020_workBox .hd ul li.on:before{content:"";display:inline-block;position:absolute;left:50%;margin-left:-12px;top:50px;width:0;height:0;border-left:12px solid transparent;border-top:12px solid #0692e7;border-right:12px solid transparent}
.ai_2020_workBox .bd{ clear:both; display:block}
.ai_2020_workBox .bd li{overflow:hidden;background:#fff}
.ai_2020_workBox .bd li .pic{width:600px;float:left}
.ai_2020_workBox .bd li .pic img{width:600px;height:400px}
.ai_2020_workBox .bd li .con{position:relative;width:560px;padding:15px 20px 0;float:left}
.ai_2020_workBox .bd li .con .title{font-size:20px;color:#000}
.ai_2020_workBox .bd li .con .intro{color:#333;border-top:1px dotted #cbcbcb;padding-top:0px;margin-top:10px;font-size:14px;line-height:22px}
.ai_2020_workBox .bd li .con .intro h3{font-size:16px;padding:10px 0 5px 0;font-weight:400; color:#000}
.ai_2020_workBox .prev{position:absolute;z-index:1;width:50px;height:60px;overflow:hidden;cursor:pointer;left:0;top:50%;background:url(../images/java_p.png) no-repeat center #ea5404;margin-top:-30px;-webkit-transition:.6s;-moz-transition:.6s;-ms-transition:.6s;transition:.6s}
.ai_2020_workBox .next{position:absolute;z-index:1;width:50px;height:60px;overflow:hidden;cursor:pointer;left:685px;top:50%;background:url(../images/java_n.png) no-repeat center #ea5404;margin-top:-30px;-webkit-transition:.6s;-moz-transition:.6s;-ms-transition:.6s;transition:.6s}
.ai_2020_workBox .prev:hover{position:absolute;z-index:1;width:50px;height:60px;overflow:hidden;cursor:pointer;left:0;top:50%;background:url(../images/java_p.png) no-repeat center #3a6dca;margin-top:-30px}
.ai_2020_workBox .next:hover{position:absolute;z-index:1;width:50px;height:60px;overflow:hidden;cursor:pointer;left:685px;top:50%;background:url(../images/java_n.png) no-repeat center #3a6dca;margin-top:-30px}

.ai_2020_jd{ width:100%;border:#000 solid 1px;border-collapse:collapse;font-size:14px; position:relative}
.ai_2020_jd th{border-collapse:collapse;border:#333 solid 1px; padding:15px 0; font-size:16px}
.ai_2020_jd td{border-collapse:collapse;border:#333 solid 1px; padding:10px; line-height:24px;}
.ai_2020_jd .td1{ width:100px; text-align:center; }
.ai_2020_jd .td2{ width:220px; text-align:center; }
.ai_2020_jd .td3{ width:550px; }
.ai_2020_jd .td4{ }
.ai_2020_jd .t50{ width:50%; float:left}

.ai_2020_kc{ width:100%;border:#000 solid 1px;border-collapse:collapse;font-size:14px; position:relative}
.ai_2020_kc th{border-collapse:collapse;border:#333 solid 1px; padding:15px 0; font-size:16px}
.ai_2020_kc td{border-collapse:collapse;border:#333 solid 1px; padding:10px; line-height:24px;}
.ai_2020_kc .td1{ width:150px; text-align:center; }
.ai_2020_kc .td2{ width:680px; }
.ai_2020_kc .td3{ font-weight:normal; padding:0 15px; vertical-align:text-top; text-align:left; font-size:14px; line-height:24px}
.ai_2020_kc .td3 div{ height:auto !important; }
.ai_2020_kc .td3 h3{ font-size:16px; padding:20px 0 10px}
.ai_2020_kc .t50{ width:50%; float:left}