Add nyan-cat easter egg

public/css/default.css

@@ -147,6 +147,21 @@ i.space-invader.alt-6::before {
 i.space-invader.alt-7::before {
 	content: 'O';
 }
+i.nyan-cat {
+	background-image: url('../images/nyan-cat.gif');
+	background-position: 0 -25px;
+	background-size: cover;
+	display: inline-block;
+	height: 85px;
+	left: -40px;
+	position: absolute;
+	top: -5px;
+	transform: rotate(-5deg);
+	transition: 0.25s;
+	width: 110px;
+}
+
+
 @media (max-width: 991px) {
 	.navbar-brand {
 		padding-left: 60px;
@@ -157,6 +172,10 @@ i.space-invader.alt-7::before {
 		top: -7px;
 		width: 70px;
 	}
+	i.nyan-cat {
+		left: -57px;
+		top: -7px;
+	}
 }