.square {
	width: 32px;
	height: 32px;
	float: left;
	position: relative;
}

.square img:not(.ground, #ground_side, #ground_corner) {
	position: absolute;
	bottom: 0;
	left: 50%;
	transform: translateX(-50%);
	pointer-events: none;
}

#ground:hover, #ground_farm:hover {
	transition: border-radius 0.3s ease;
	border-radius: 13px;
}