html, body {
  margin: auto;
  /*padding: 0;
  overflow: hidden; /* Hide scrollbars */
  height: 100%;     /* Για να μην γίνεται scrolling */

  -webkit-touch-callout: none; /* iOS Safari */
  -webkit-user-select: none; /* Safari */
   -khtml-user-select: none; /* Konqueror HTML */
     -moz-user-select: none; /* Old versions of Firefox */
      -ms-user-select: none; /* Internet Explorer/Edge */
          user-select: none; /* Non-prefixed version, currently
                                supported by Chrome, Edge, Opera and Firefox */
  background-color: rgb(250, 250, 180);
}
canvas {
  display: block;
  margin: auto;
  height: 100%;     /* Για να μην γίνεται scrolling */
  touch-action: none; /* Για να μην κινείται ο canvas όταν γίνεται drag */
}