#nav_box_lt31{ background:transparent;text-align:left;height:41px;line-height:41px;font-weight:bold;}
#nav_box_lt31 #nav_lt31{margin:0 auto;width:1000px;color:#ffffff;font-size:21px;padding-left:0px;text-align: center;}
#nav_box_lt31 #nav_lt31 a{color:#fff;padding:0 25px;height:41px; display:inline-block;font-weight:bold;}
#nav_box_lt31 #nav_lt31 a:hover{color:#ffd762; text-decoration:none;}