.header_placeholder {
  height: 80px;
  position: relative;
  z-index: 2;
}

#header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  background-color: transparent;
  -webkit-transition: all 0.2s ease-out;
  transition: all 0.2s ease-out;
}

#header:not(.fixed):not(.show_sub_menu) {
  background-color: transparent;
}

body[data-header-theme="white"][data-nav="home"] .big_banner {
  margin-top: -80px;
}

#header .center {
  width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 80px;
}

#header .logo {
  position: relative;
  width: 300px;
  height: 100%;
}

#header .logo img {
  padding: 10px 0;
}

.logo .logo-img {
  display: none;
}

#header .logo .logo-img,
#header .logo .logo-img-white {
  position: absolute;
  left: 0;
  top: 0;
}

#header .fr {
  float: right;
}

#header .one_nav li {
  position: relative;
  color: #78787d;
  border-bottom: 4px solid transparent;
}

#header .one_nav li.active,
#header .one_nav li:hover {
  color: #000;
  border-bottom-color: #0086cd;
}

#header .one_nav span {
  display: block;
  padding: 28px 0 24px;
  line-height: 1;
  cursor: pointer;
}

#header .one_nav .sub_menu,
#header .one_nav .sub_menu a,
#header .one_nav li {
  -webkit-transition: all 0.2s ease-out;
  transition: all 0.2s ease-out;
}

#header .one_nav .sub_menu {
  position: absolute;
  top: 100%;
  left: -30%;
  width: 300%;
  text-align: center;
  max-height: 0;
  overflow: hidden;
}

#header .one_nav .sub_menu a {
  display: block;
  color: #666;
  margin: 12px 0;
  line-height: 1.8;
  position: relative;
  left: -22%;
}

#header .one_nav .sub_menu a:hover {
  color: #0086cd;
}

#header.fixed .logo .logo-img-white,
#header.show_sub_menu .logo .logo-img-white {
  display: none !important;
}

#header.fixed .logo .logo-img,
#header.show_sub_menu .logo .logo-img {
  display: block !important;
}

#header.white li {
  color: #fff;
}

#header.white li.active,
#header.white li:hover {
  color: #fff;
  border-bottom-color: #fff;
}

#header.fixed {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  background-color: #fff;
}

#header.fixed li,
#header.show_sub_menu li {
  color: #78787d;
}

#header.fixed li.active,
#header.fixed li:hover,
#header.show_sub_menu li.active,
#header.show_sub_menu li:hover {
  color: #000;
  border-bottom-color: #0086cd;
}

#header .mask {
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  height: 0;
  background-color: transparent;
  -webkit-transition: all 0.2s ease-out;
  transition: all 0.2s ease-out;
}

#header.show_sub_menu {
  background-color: #fff;
}

#header.show_sub_menu .mask {
  height: 350px;
  background-color: #fff;
}

#header.show_sub_menu .has_sub_menu:hover .sub_menu {
  max-height: 350px;
}