canvas {
 -webkit-touch-callout: none;
-webkit-user-select: none; 
-khtml-user-select: none; 
-moz-user-select: none;
-ms-user-select: none; 
user-select: none; 
outline: none; 
-webkit-tap-highlight-color: rgba(255, 255, 255, 0); 
 }