.gggtt_content {
  background: url(images/gggtt_bac.png) no-repeat center;
  width: 100%;
  background-size: 100% 100%;
  padding-bottom: 100px;
}

.gggtt_content .gggttTitle {
  padding-top: 90px;
  text-align: center;
}

.gggtt_content .gggttTitle img {
  height: 56px;
  width: auto;
  margin-bottom: 30px;
}

.gggtt_content .gggttTitle .gggttP {
  font-size: 18px;
}

.gggtt_content .mainContent {
  height: 960px;
  margin-top: 50px;
  justify-content: space-between;
}

.gggtt_content .mainContent .iframediv {
  /* width: 76.28%; */
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: relative;
  background-color: #fff;
}

.gggtt_content .mainContent .iframediv iframe {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  border: none;
  object-fit: cover;
}

#loading {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.hidden {
  display: none;
}

@media screen and (max-width: 1200px) {
  .mainContent {
    height: 700px;
    padding: 0;
  }
}