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;
+	}
 }
 
 

templates/MainNavBar.php

@@ -20,12 +20,13 @@ class MainNavBar extends NavBar
 		// Select a random space invader, with a bias towards the mascot
 		$rnd = rand(0, 100);
 		$alt = $rnd > 50 ? ' alt-' . ($rnd % 6 + 1) : '';
+		$className = $rnd > 5 ? 'space-invader' . $alt : 'nyan-cat';
 
 		echo '
 		<nav id="', $this->outerMenuId, '" class="navbar navbar-expand-lg ', $this->navBarClasses, '" aria-label="', $this->ariaLabel, '">
 			<div class="container">
 				<a class="navbar-brand flex-grow-1" href="', BASEURL, '/">
-					<i class="space-invader', $alt, '"></i>
+					<i class="', $className, '"></i>
 					HashRU Pics
 				</a>
 				<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#', $this->innerMenuId, '" aria-controls="', $this->innerMenuId, '" aria-expanded="false" aria-label="Toggle navigation">