body {
  background-color: black;
  width: 100%;
}
a {
  text-decoration: none; /* 去掉下划线 */
}
section {
  margin-top: 50px;
}
.first-section {
  margin-top: 0;
}
.w-30 {
  width: 30%;
}
.w-40 {
  width: 40%;
}
.text-align-center {
  text-align: center;
}
.langauge-imgage {
  width: 35px;
  height: 35px;
}
.navbar-container {
  position: relative;
  background-color: black;
}
.navbar {
  height: 100px;
  background: rgba(0, 0, 0, 0.45);
  padding-left: 5%;
  padding-right: 5%;
  position: relative;
}
.nav::after {
  position: absolute;
  content: ' ';
  left: 0;
  top: 100px;
  width: 100%;
  height: 5px;
  background: linear-gradient( 90deg, rgba(255,255,255,0) 0%, #C7171E 25%, #C7171E 50%, #C7171E 75%, rgba(255,255,255,0) 100%);
  border-radius: 0px 0px 0px 0px;
}
.navbar .navbar-brand .header-logo {
  width: 70%;
}
.navbar .navbar-collapse {
  width: 100%;
  padding-top: 16px;
  font-size: 20px;
}
.navbar .navbar-collapse .nav-link {
  color: white;
}
.navbar-light .navbar-nav .nav-link.active,
.navbar-light .navbar-nav .show > .nav-link {
  color: #c7171e;
}

.section-title {
  color: white;
  font-size: 35px;
  text-decoration: underline; /* 添加下划线 */
  text-decoration-color: red; /* 下划线颜色 */
  text-decoration-thickness: 2px; /* 下划线宽度 */
}
.section-a {
  color: #999999;
  text-decoration: none;
}
.footer-nav {
  margin-bottom: 25px;
}
.footer-nav .nav-link {
  color: white;
}
.contact-img {
  width: 25px;
  height: 25px;
  margin-right: 5px;
}
.media-icon {
  width: 40px;
  height: 40px;
}
.copyright {
  height: 100px;
  margin-top: 0;
  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: center;
  background-color: #171717;
}

 .gt_switcher {
    width: 60px !important;
}
.gt_switcher a{
    font-size: 0pt !important;
}
@media screen and (max-width: 767px) {
  .navbar-container {
    position: relative;
    z-index: 0;
    width: 100%;
  }
  .navbar {
    height: auto;
    background: black;
    margin: 0px;
    padding: 0px;
  }
  .section-title {
    color: white;
    font-size: 18px;
    text-decoration: underline; /* 添加下划线 */
    text-decoration-color: red; /* 下划线颜色 */
    text-decoration-thickness: 2px; /* 下划线宽度 */
  }

  .contact-img {
    width: 25px;
    height: 25px;
  }
  .footer-nav {
    display: none;
  }
   .gt_switcher {
    width: 60px !important;
}
}