* {
	padding: 0;
	margin: 0;
   }
   
   html, body, canvas {

	background: #fff;
	color: #fff;
	overflow: hidden;
	touch-action: none;
	-ms-touch-action: none;
			 -webkit-touch-callout:none; /*系统默认菜单被禁用*/
			 -webkit-user-select:none; /*webkit浏览器*/
			 -khtml-user-select:none; /*早期浏览器*/
			 -moz-user-select:none;/*火狐*/
			 -ms-user-select:none; /*IE10*/
			 user-select:none;
			 
   }
   canvas {
	touch-action-delay: none;
	touch-action: none;
	-ms-touch-action: none;
   }