.first_square
{
	background-color: #3894EA;
	background-image: url('../images/pl/square_1.jpg');
}

.first_square_hover
{
	background-image: url('../images/pl/square_1_hover.jpg');
}

.second_square
{
	background-color: #3C6FB5;
	background-image: url('../images/pl/square_2.jpg');
}

.second_square_hover
{
	background-image: url('../images/pl/square_2_hover.jpg');
}

.third_square
{
	background-color: #0053A1;
	background-image: url('../images/pl/square_3.jpg');
}

.third_square_hover
{
	background-image: url('../images/pl/square_3_hover.jpg');
}