body{ font: 14px sans-serif; text-align: center; }
		.wrapper{ width: 350px; padding: 20px; }
		canvas {
			-moz-user-select: none;
			-webkit-user-select: none;
			-ms-user-select: none;
		}
		input[type=number]::-webkit-inner-spin-button, 
		input[type=number]::-webkit-outer-spin-button { 
			-webkit-appearance: none; 
			margin: 0; 
		}

            blink {
              display: inline;
              color: inherit;
              animation: blink 1s steps(1) infinite;
              -webkit-animation: blink 1s steps(1) infinite;
            }
            @keyframes blink { 50% { color: transparent; } }
            @-webkit-keyframes blink { 50% { color: transparent; } }