body {
    width: 100%!important;
    line-height: 1;
    font: 14px Tahoma,Helvetica,Arial,"宋体";
}
.clearfix{zoom:1;} /*兼容IE6/7的清除浮动*/
.clearfix:after{
    content:""; /*具体的值与清除浮动无关，尽可能的节省字符*/
    clear:both;
    overflow:hidden;
    height:0; /*0高度使其不占用布局空间*/
    display:block; /*设置成块级元素*/
}

/*框架布局*/
.w960{width: 1200px; margin: 0 auto;}

/*导航栏*/
.nav_bar{height: 82px;line-height:82px;background-color: #fff;width:100%;overflow:hidden; transition: all 0.5s ease-out;}
.nav_bar{-webkit-box-shadow: 0 2px 5px 0 rgba(0,0,0,0.16),0 2px 10px 0 rgba(0,0,0,0.12);-moz-box-shadow: 0 2px 5px 0 rgba(0,0,0,0.16),0 2px 10px 0 rgba(0,0,0,0.12);box-shadow: 0 2px 5px 0 rgba(0,0,0,0.16),0 2px 10px 0 rgba(0,0,0,0.12);}
.nav_bar .logo{background: url("//qnoss3.lanlanlife.com/6ee868842aa707449239f0ad09b19a7c_62x139.png")no-repeat;background-size: 100%;width:100px;height: 52px;margin-top:18px;float: left;}
.nav_bar ._tabs{float: right;}
.nav_bar ._tabs li{float:left;height: 82px;padding: 0 28px;}
.nav_bar ._tabs li.current{background: url("//qnoss.lanlanlife.com/cb31599474ba0dd748ff5587f501a6f4_18x21.png") no-repeat bottom center;}
.nav_bar ._tabs li a{position: relative;display:block;height: 82px;color: #333;font-size: 18px;line-height: 82px;}
.nav_bar ._tabs li.current a{color: #ff2754;}
.nav_bar ._tabs li.current a:after{position: absolute;bottom:20px;left:0;content:'';height: 3px;background-color: #ff2754;width: 100%;}