.page_header{ position: fixed; top: 16px; left: 0; right: 0; z-index: 9; margin: auto; min-width: 320px; background: #fff;} .page_header .box_header{ max-width: 1920px; margin: auto;} .page_header .box_header .page_index a{ display: inline-block;}
.page_header .box_header .page_index img{ height: 45px; margin: 12px 0;} .page_header .box_header .page_index .page_menu{ font-size: 2.5rem; text-align: center; background: url() no-repeat right center; background-size: 40px;} .page_header .box_header .page_index .page_menu .page_title{ height: 40px; margin: 5px 0; line-height: 40px;} .page_header .box_header .page_index .navbar-toggle{ padding: 0; margin: 0; border: none;}
.page_header .box_header .page_nav{ float: right; margin: 15px 0; text-align: center;} .page_header .box_header .page_nav ul{ display: inline-block; float: none;} .page_header .box_header .page_nav li{ border-radius: 30px; box-shadow: 0px 0px 20px 0px rgba(0, 0, 0, 0.08); margin: 5px 10px; font-weight: 600;} .page_header .box_header .page_nav li.active{ background: #ff7171} .page_header .box_header .page_nav li.active a{ color: #fff;} .page_header .box_header .page_nav a{ display: block; padding: 5px 20px; color: #333; font-size: 1.5rem; border-radius: 30px;} .page_header .box_header .page_nav a:hover{ background: #ff7171; color: #fff;}
.page_header .box_header .sub_nav{ text-align: center; background: #fff; display: none;} .page_header .box_header .sub_nav li{ display: none;} .page_header .box_header .sub_nav a{ border-radius: 30px; box-shadow: 0px 0px 20px 0px rgba(0, 0, 0, 0.08); margin: 20px 10px; font-weight: 600; padding: 5px 20px; color: #333; font-size: 1.5rem; display: inline-block;} .page_header .box_header .sub_nav a.active{ background: #ff7171; color: #fff;} .page_header .box_header .sub_nav a:hover{ background: #ff7171; color: #fff;}
.nav_mask{ width: 100%; height: 100%; position: fixed; background: rgba(255,255,255,0); z-index: 1; display: none;}
@media (max-width: 767px) {
.page_header{ padding: 10px 0;} .page_header .box_header .page_index{ height: 50px;} .page_header .box_header .page_index img{ height: 45px; margin: 2.5px 0;} .page_header .box_header .page_nav{ text-align: left;} .page_header .box_header .page_nav ul{ display: block;} }
@media (min-width: 768px) {
.page_header .box_header .page_index{ width: 10%;} .page_header .box_header .page_nav { width: 90% !important;}
}