html,body{
			width: 100%;
			height: 100%;
			margin: 0;
			padding: 0;
			background: black;
			overflow: hidden;
			font-family: Helvetica, arial, sans-serif;
		}
		.form{
		  position: fixed;
		  left: 10px;
		  top: 10px;
		  color: white;
		  border: 1px solid white;
		  padding: 10px;
		  display: none;
		}
		.form button{background: black;color: white;width:100%;}
		.form.visible{display: block;}
		.form p:first-child{margin-top: 0;}
		button, input{width: 100px;float: right;}
		p{margin: 15px 0;text-align: left;clear: both;}
		label{margin-right: 15px;}
		#tip{position: absolute;bottom:0px;left:10px;color: white;}