html,
body
{
    height: 100vh;
    overflow: hidden;
}
video {
display: block;
margin: auto;
height:100%;
width:100%;
}

#video_frame {
  height: 100%;
  width: 100%;
}


.interactive-image {
  height:50%;
  background-image: url("/the wall1bluredwholeviwid.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  display: inline-block;
  max-width: none;
}
.about-container {
  width: 50px;
  height: 50px;
  position: fixed;
  right:0;
  bottom:0;
  padding: 4px;
  font-size: 28px;
  text-decoration: none;
  background-color: rgba(235,235,235,0.75);
  backdrop-filter: blur(2px);
  text-align: center;
}
.guide-container {
  width: 50px;
  height: 50px;
  position: fixed;
  right:50px;
  bottom:0px;
  padding: 4px;
  font-size: 28px;
  text-decoration: none;
  background-color: rgba(200,200,200,0.75);
  backdrop-filter: blur(2px);
  text-align: center;
}
.main-frame {
  width: 100%;
  height:100%;
  overflow-y: auto;
  display: block;
}
.description-block {
  width: 100%;
  height:40%;
  display: inline-block;
}
.description {
  width: 100%;
  height:35%;
  position: fixed;
  left:0;
  top:0;
  padding: 15px;
}
#idiom{
  margin:0;
}
#definition{
  margin:0;
  color: green;
}
#info{
  margin:0;
}
.pin{
  position: absolute;
  z-index: 8;
  width: 50px;
  height: 50px;
  display: none;
  cursor: pointer;
  font-size: 28px;
  text-align: center;
}
.text {
  color:#000;
}
.video {
  color:#7F00FF;
}
.link {
  color:#CC0000;
}
.about {
  width: 42px;
  height: 50px;
  position: relative;
  padding: 4px;
  font-size: 28px;
  text-decoration: none;
}
.guide {
  width: 42px;
  height: 50px;
  position: relative;
  padding: 4px;
  font-size: 28px;
  text-decoration: none;
}
.back {
  width: 42px;
  height: 50px;
  position: fixed;
  right:0;
  bottom:0;
  padding: 4px;
  font-size: 28px;
  text-decoration: none;
}
.back-container {
  width: 50px;
  height: 50px;
  position: fixed;
  right:0;
  bottom:0;
  padding: 4px;
  font-size: 28px;
  text-decoration: none;
  background-color: rgba(235,235,235,0.75);
  backdrop-filter: blur(2px);
}
.content-block {
  width: 100%;
  height:70%;
}
.content {
  height:30%;
  width:100%;
  background-image: url("/the wall1bluredwholeviwid.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  display: inline-block;
  background-position: 0%;
  padding:30px;
}
.about-2 {
  width: 100%;
  height:65%;
  position: fixed;
  left:0;
  top:0;
  padding: 20px;
  overflow-y: auto;
}
#pl-btn{
  font-weight: bold;
}
#en{
  display:none;
}
#is{
  display:none;
}
.pointer {
  cursor: pointer;
}