header{
    margin:0 auto;
    width:100%;
    text-align:center;
}
header h1{
    font-family:Arial;
    font-size:40px;
    font-weight:bold;
}
header p{
    font-family:Arial;
    font-size:25px;
    margin:20px auto;
}
header #newgamebutton{
    display:block;
    margin:20px auto;

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

    font-family:Arial;
    color:white;

    border-radius:10px;
    text-decoration:none;
}
header #newgamebutton:hover{
    background-color:#9f8b77;
}
#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;

	background-color: #ccc0b3;

	border-radius: 6px;

	position: absolute;
}

.number-cell{
	border-radius: 6px;

	position: absolute;

	font-family: Arial;
	font-weight: bold;
	font-size: 60px;
	line-height:100px;
	text-align: center;
}