body {
   
    background-color:#28303D;
 }

 h1 {
   visibility: visible;
    color: greenyellow;
    position:absolute;
    left:350px; 
    top:300px;

 }

 input {

    height: 300; width: 300;
    visibility: hidden;
 }

 button {

   position:absolute;
   left:420px; 
   top:600px;
  
   visibility: visible;
}

 div {

    position:relative;
     width:940px;
      height:352px;
 }

 canvas {

    z-index: 1;
    position:absolute; 
    left:0px; 
    top:0px;
 }