body{
	background-color: #000000;
        margin: 0;
        padding: 0;

        height: 100vh;
        width: 100vw;
        display: flex;
        align-items: center;
        justify-content: center;
      }
      
      canvas {
        display: block;
      }
      
      .videoid{
        height:80vh;
        width:80vw;
      }

      a {
        text-decoration: none;
        color: black;
    }

      #return {
    
        position: fixed;
        top: 2vh;
        left: 1vw;
    }

    #button4{
      background-color: transparent;
      color: transparent;
      border: transparent;
      position: fixed;
      top: 10vh;
      left: 3vw;
    }

    #return2 {
    
      position: fixed;
      bottom: 2vh;
      right: 5vw;

  }

    #button6{
      background-color: transparent;
      color: transparent;
      border: transparent;
      position: fixed;
      bottom: 10vh;
      right: 0vw;
    }