header{
	display: block;
	margin:0 auto;
	width:100%;
	text-align: center;
}
header h1{
	font-family: Arial;
	font-size: 40px;
	font-weight: bold;
	margin-top: 20px;
	margin-bottom: 20px;
}
header #newgamebutton{
	display: inline-block;

	width: 100px;
	padding:10px;
	background-color: #8f7a66;

	font-family: Arial;
	color: white;

	border-radius: 10px;

	text-decoration: none;
}
header #newgamebutton:hover{
	background-color: #9f8b77;
}
header p{
	display: inline-block;
	font-family: Arial;
	font-size: 25px;
	margin: 0 0 0 20px;
}

#grid-container{
	width: 460px;
	height: 460px;
	padding:20px;

	margin:50px auto;
	background-color: #bbada0;

	border-radius: 10px;
	position: relative;
}
.grid-cell{
	width: 100px;
	height: 100px;
	border-radius: 6px;
	background-color: #ccc0b3;

	position: absolute;
}
.number-cell{
	border-radius: 6px;

	font-family: Arial;
	font-weight: bold;
	line-height: 100px;
	text-align: center;

	position: absolute;
}