ul.big-button {
	list-style: none;
	margin: 20px 0;
	padding: 0;
	clear: both;
	overflow: hidden;
}
ul.big-button li a {
	display: inline-block;
	float: left;
	width: 29%;
	margin-right: 2%;
	margin-left: 10%;
	background-color: #ddb;
	font-size: 20px;
	line-height: 1.5;
	text-decoration: none;
	text-align: center;
	padding: 10px 0;
	border-radius: 20px;
	outline: none;
	
}
ul.big-button li a:hover {
	background-color: #f60;
	color: #fff;
}
#Quiz h1 {
	text-align:  center;
}