#gridPanel {
	width:480px;
	height:480px;
	margin:0 auto;
	position:relative;
	background:#bbada0;
	border-radius:10px;
}
.grid,.cell {
	width:100px;
	height:100px;
	border-radius:6px;
}
.grid {
	float:left;
	background:#ccc0b3;
	margin:16px 0 0 16px;
}
.cell {
	position:absolute;
	font-size:60px;
	text-align:center;
	line-height:100px;
	color:#fff;
}
[id^="c0"] {
	top:16px;
}
[id^="c1"] {
	top:132px;
}
[id^="c2"] {
	top:248px;
}
[id^="c3"] {
	top:364px;
}
[id$="0"] {
	left:16px;
}
[id$="1"] {
	left:132px;
}
[id$="2"] {
	left:248px;
}
[id$="3"] {
	left:364px;
}
.n2 {
	background-color:#eee3da
}
.n4 {
	background-color:#ede0c8
}
.n8 {
	background-color:#f2b179
}
.n16 {
	background-color:#f59563
}
.n32 {
	background-color:#f67c5f
}
.n64 {
	background-color:#f65e3b
}
.n128 {
	background-color:#edcf72
}
.n256 {
	background-color:#edcc61
}
.n512 {
	background-color:#9c0
}
.n1024 {
	background-color:#33b5e5
}
.n2048 {
	background-color:#09c
}
.n4096 {
	background-color:#a6c
}
.n8192 {
	background-color:#93c
}
.n2,.n4 {
	color:#776e65
}
.n1024,.n2048,.n4096,.n8192 {
	font-size:40px
}
p {
	width:480px;
	margin:0 auto;
	font-size:40px;
	font-family:Arial;
	font-weight:bold;
	padding-top:15px;
}
#gameOver {
	display:none;
	position:absolute;
	top:0;
	left:0;
	right:0;
	bottom:0;
	background:rgba(55,55,55,.5);
}
#gameOver>p {
	width:300px;
	height:200px;
	position:absolute;
	top:50%;
	left:50%;
	margin-left:-150px;
	margin-top:-100px;
	background:#fff;
	text-align:center;
	line-height:1.5em;
	border-radius:10px;
	border:1px solid #edcf72;
}
#gameOver .btn {
	padding:10px;
	color:#fff;
	background:#9f8d77;
	border-radius:6px;
	text-decoration:none;
}