.grid {
	border: 1px solid black;
	height: 180px;
	width: 180px;
	display: flex;
	flex-wrap: wrap;
}

.grid div {
	height: 20px;
	width: 20px;
}

.ending-block {
	background-color: red;
}

.starting-block {
	background-color: blue;
}
.l1, .l2, .l3 {
	background-color: brown;
}

.l4, .l5 {
	background-color: lightblue;
}

.c1 {
	background-color: black;
}

.c2, .c3 {
	background-color: lightgrey;
}

.frog {
	background-color: green;
}