.logo { padding-top: 30px;}
.i_topsc { color: #767676; font-size: 15px; padding-top: 30px; text-align: right;}
.i_topsc a { color: #767676;}
.i_topsc a:hover { color: #000;}
 .i_sear { border: 1px solid #eee; width: 260px; height: 34px; background: #fff; float: left;color: #9b9b9b; text-indent: 5px;}
 .i_sear input {background-color: #FFF;  border: none;}
 .i_sou { background: #e90000; width:68px; height: 38px; border:none; color: #fff; border: 1px solid #e90000;}
 .i_ssyb { padding-top: 73px;}
.nav_bg { background: #000; height: 58px;margin-top: 25px;}
.nav { height: 58px; line-height: 58px;}
.nav li { width:171px; text-align: center; float: left; font-size: 18px;}
.nav li a { width:171px; display: block; color: #fff;}
.nav li a:hover { width:171px; display: block; background: #585858; color: #fff;}