html,
 body {
   position: fixed;
   background: #ffffff;
   overflow: hidden;
   overscroll-behavior: none;
 }

#canvas {
    border: 1px solid black;
}   

input[type=radio], input[type=checkbox] {
		display:none;
	}

input[type=radio] + label, input[type=checkbox] + label {
		display:inline-block;
		margin:-2px;
		padding: 4px 12px;
		margin-bottom: 0;
		font-size: 14px;
		line-height: 20px;
		color: #333;
		text-align: center;
		text-shadow: 0 1px 1px rgba(255,255,255,0.75);
		vertical-align: middle;
		cursor: pointer;
		background-color: #f5f5f5;
		background-image: -moz-linear-gradient(top,#fff,#e6e6e6);
		background-image: -webkit-gradient(linear,0 0,0 100%,from(#fff),to(#e6e6e6));
		background-image: -webkit-linear-gradient(top,#fff,#e6e6e6);
		background-image: -o-linear-gradient(top,#fff,#e6e6e6);
		background-image: linear-gradient(to bottom,#fff,#e6e6e6);
		background-repeat: repeat-x;
		border: 1px solid #ccc;
		border-color: #e6e6e6 #e6e6e6 #bfbfbf;
		border-color: rgba(0,0,0,0.1) rgba(0,0,0,0.1) rgba(0,0,0,0.25);
		border-bottom-color: #b3b3b3;
		filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffffff',endColorstr='#ffe6e6e6',GradientType=0);
		filter: progid:DXImageTransform.Microsoft.gradient(enabled=false);
		-webkit-box-shadow: inset 0 1px 0 rgba(255,255,255,0.2),0 1px 2px rgba(0,0,0,0.05);
		-moz-box-shadow: inset 0 1px 0 rgba(255,255,255,0.2),0 1px 2px rgba(0,0,0,0.05);
		box-shadow: inset 0 1px 0 rgba(255,255,255,0.2),0 1px 2px rgba(0,0,0,0.05);
}

	 input[type=radio]:checked + label, input[type=checkbox]:checked + label{
		   background-image: none;
		outline: 0;
		-webkit-box-shadow: inset 0 2px 4px rgba(0,0,0,0.15),0 1px 2px rgba(0,0,0,0.05);
		-moz-box-shadow: inset 0 2px 4px rgba(0,0,0,0.15),0 1px 2px rgba(0,0,0,0.05);
		box-shadow: inset 0 2px 4px rgba(0,0,0,0.15),0 1px 2px rgba(0,0,0,0.05);
			background-color:#e0e0e0;
	}