html{background:none repeat scroll 0 0 #FFFFFF;  overflow-y:scroll}
body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, fieldset, lengend, button, input, textarea, form, th, td{margin:0; padding:0}
body, button, input, select, textarea{font:14px/1.8 "Microsoft Yahei", verdana}
.ie10 body,.ie11 body{font:14px/1.8 "Microsoft Yahei", verdana}
h1, h2, h3, h4, h5, h6{font-size:100%; font-weight:normal}
button, input, select, textarea{font-size:100%}
hr{border:0; height:1px; *color:#fff}
address, cite, dfn, em, var{font-style:normal}
small{font-size:12px}
.fl-clear{clear:both}
.fl-clr{zoom:1}
.fl-clr:after{display:block; clear:both; height:0; content:"\0020"}
table{border-collapse:collapse; border-spacing:0}
ul, ol{list-style:none outside none}
a{text-decoration:none; color:#696969}
a:hover{text-decoration:none; color:#ff6637}
img{border:0}


.left_nav ul{margin-top:-1px;}
.left_nav li{padding:0 20px;}
.left_nav li .t a,.left_nav li .t.hover:hover a{color:#000}
.left_nav li .t:hover a{}
.left_nav li .txt{padding:0 0 20px 18px; display:none}
.left_nav li .txt p{line-height:30px; height:30px; overflow:hidden}
.left_nav .more{ display:block; width:260px; height:55px; margin:0 auto; text-align:center; line-height:55px; color:#999; cursor:pointer;border-radius:50px;-moz-border-radius:50px;-webkit-border-radius:50px; overflow:hidden}
.left_nav .more:hover{}
.left_nav .more span{padding-right:18px; background:url(../img/ioc_down.png) no-repeat right center;}
.left_nav .more.hover span{background:url(../img/ioc_up.png) no-repeat right center;}

.explain_txt{width:860px; margin:0 auto; line-height:40px; padding:0 0 200px 0; font-size:16px}