.block_0 {
	transition: all 0.25s ease-in-out;
	color: #aaa;
	box-shadow: 0px 0px 10px #999;
}

.block_1 {
	transition: all 0.25s ease-in-out;
	color: blue;
	border: 2px solid blue;
	box-shadow: 5px 5px 10px blue;
}

.block_2 {
	transition: all 0.25s ease-in-out;
	color: purple;
	border: 3px solid purple;
	box-shadow: 5px 5px 10px purple;
}

.block_3 {
	transition: all 0.25s ease-in-out;
	color: red;
	border: 3px solid red;
	box-shadow: 5px 5px 10px red;
}

.block_4 {
	transition: all 0.25s ease-in-out;
	color: black;
	border: 3px solid black;
	box-shadow: 5px 5px 10px black;
}