body {background-color: green;
}
.intro {padding: 10px;
	Background-color: darkgreen;
	width: 50%;
	text-align: center;
	left: 25%;
	position: fixed;
	border-style: solid;
	font-family: helvetica;}
.guide {font-family: helvetica;
		padding-top: 20%;}
button {font-family: helvetica;
	background-color: green;
	border-color: darkgreen;}
.warning {font-family: helvetica;}
p {font-family: helvetica;}