brick-button.css

body{
	margin: 0;
	padding: 0;
	background: #262626;
}

a{
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	padding: 15px 30px;
	text-transform: uppercase;
	text-decoration: none;
	color: #fff;
	letter-spacing: 2px;
	font-size: 20px;
}

a:before{
		content: "";
		position: absolute;
		top: 0;
		left: 0;
		width: 100%;
		height: 100%;
		background-color: #B22222;
		z-index: -1;
		transition: transform 0.5s;
		transform-origin: bottom right;
		transform: scale(0);
}

a:hover:before{
	transition: transform 0.5s;
	transform-origin: top left;
	transform: scale(1);
}

a:after{
		content: "";
		position: absolute;
		top: 0;
		left: 0;
		width: 100%;
		height: 100%;
		background-color: transparent;
		border: 2px solid #fff;
		z-index: -1;
		transition: transform 0.5s;
		transform-origin: bottom left;
		transform: scale(1);
}

a:hover:after{
	transition: transform 0.5s;
	transform-origin: bottom right;
	transform: scale(0);
}