#header {
  position: relative;
  width: 100%;
  z-index: 999;
  height: 95px;
  background-color: #fff;
  border-bottom: 6px solid #dcdcdc;
}

#header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

#header .logo_nt {
  display: block;
  width: 262px;
}

#header .logo_nt img {
  width: 100%;
}

#menu_btn {
  display: none;
}

.top_right {
  display: flex;
  align-items: center;
}

.top_right_lan {
  position: relative;
}

.lang_con {
  display: flex;
  align-items: center;
  cursor: pointer;
}

.lang_con img {
  margin-right: 10px;
}

.lang_box {
  position: absolute;
  top: 26px;
  left: 50%;
  transform: translateX(-50%);
  display: none;
  padding: 10px;
  width: 100px;
  background-color: #fff;
  border-radius: 5px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.lang_box a {
  display: block;
  width: 100%;
  height: 30px;
  line-height: 30px;
  text-align: center;
}

.top_right_lan:hover .lang_box {
  display: block;
}

.top_right_search {
  position: relative;
}

.top_right_search form {
  position: absolute;
  display: flex;
  left: 50%;
  transform: translateX(-50%);
  border: 1px solid #dcdcdc;
  height: 30px;
  line-height: 30px;
  display: none;
}

.top_right_search form input {
  padding: 0 10px;
}

.top_right_search form button {
  border: none;
  background-color: #fff;
  cursor: pointer;
}

.top_right_search form button img {
  width: 20px;
  height: 20px;
}

.search_btn {
  margin-left: 40px;
}

@keyframes sanjiao {
  50% {
    opacity: 0;
    transform: translateX(8px);
  }
}

#mob_lan {
  display: none;
}