html,body {
	height:100%;
	margin: 0px;
	padding: 10px;
	background-color: lightgray;
	font-family: 'RobotoDraft', 'Microsoft YaHei', sans-serif;
	-webkit-user-select:none;
}
body {
	overflow:hidden;
}
body:after {
	content: "";
	position: fixed;
	background: #000;
	left: 0;
	right: 0;
	height: 1px;
	bottom: 0px;
}
@media print{
    html, body {
        height: auto;
    }
}