body{background-image: linear-gradient(to bottom, #ccc 0px, #FFF 100%)}

#mynav{margin-top:31px;}
/*顶部*/
.top_1 {height: 30px;line-height:30px; background:#F0F0F0; width:100%;position:fixed; top:0; left:0; z-index:100;}
.top_2 {width:1100px; margin:0 auto;}
.top_4 {margin-right:10px;}


/*导航栏*/
.wp_1 {height:80px; width:1100px; margin:0 auto;}
.wp_2{height: 31px; margin-right: -10px;}
.wp_2 li a { font-size: 18px; color: #4F4F4F; text-transform: uppercase;
    font-family: 微软雅黑,helvetica,tahoma,arial,sans-serif,宋体;
    padding: 0 22px;
    font-weight:400;
    -webkit-transition: all 0.3s ease-in-out;
    -moz-transition: all 0.3s ease-in-out;
    -o-transition: all 0.3s ease-in-out;
    transition: all 0.3s ease-in-out;
    text-decoration:none;
    /*font-weight: bold;*/

}
.wp_2 li {
    line-height: 31px;
    float:left;
    text-align: center;
    height: 31px;
    margin-bottom: 0px;
    border-right: 1px solid #C9C9C9;
}
.wp_2 li.nav-last{border-right: none;}
.wp_2 li a:hover{ outline:none;}
.wp_logo {margin-top:14px; margin-left:26px;}
.wp_2 .wp_2_li { color:#FE8B10; font-weight: bold; outline:none;}

/*主体写法*/
.content{border:1px solid #ccc;border-radius: 20px;height:900px;margin-top:25px;background: #f8f8f8}
.content .ct_left{width:24%;border-right:1px solid #ccc;height:100%}
.content .ct_left .nav_up{background: #3CA1F9;font-size:24px;text-align:center;color:white;line-height: 48px;border-radius:20px 0 0 0;}
.content .ct_left .nav_down{}
.content .ct_right{width:76%}