body{background-color: white;

}
#AZ{text-align:center;
 background-color: white;
color:black;
}
video{border-radius: 30px;
margin: -40px;
width: 600px;
  display: block;
    margin-right: auto;
  margin-left: auto;}


iframe{border-radius: 30px;}

@media screen and (max-width:1500px) {
   body{
      width:97%;
      height: 100%;

  }
   iframe{
      width: 90%;
  }
  video{
            width:100%;
                height: 100%;
          } 
}

  
   iframe{text-align: center;}

@media (prefers-color-scheme: dark) {
body {
background-color: #1B161E;
}
#AZ{text-align:center;
 background-color: #1B161E;
color:white;
}
}