Added Easter egg

MyWebsite/MyWebsite/Controllers/HomeController.cs

@@ -48,7 +48,18 @@ namespace MyWebsite.Controllers
 				)),
 			new CookieOptions { Expires = DateTimeOffset.UtcNow.AddYears(1) });
 
-			return Redirect(Request.Headers["Referer"]);
+			return Redirect(Extensions.CheckNullOrWhitespace(Request.Headers["Referer"], "/"));
+		}
+
+		[Route("ComicSans")]
+		public IActionResult ComicSans()
+		{
+			if (Request.Cookies.ContainsKey("useComicSans"))
+				Response.Cookies.Delete("useComicSans");
+			else
+				Response.Cookies.Append("useComicSans", "true");
+
+			return Redirect(Extensions.CheckNullOrWhitespace(Request.Headers["Referer"], "/"));
 		}
 	}
 }

MyWebsite/MyWebsite/Helpers/Extensions.cs

@@ -7,5 +7,8 @@ namespace MyWebsite
 	{
 		public static bool Belongs<T>(this T item, params T[] array) =>
 			array?.Contains(item) ?? false;
+
+		public static string CheckNullOrWhitespace(string str, string defaultValue) =>
+			string.IsNullOrWhiteSpace(str) ? defaultValue : str;
 	}
 }

MyWebsite/MyWebsite/Views/Shared/_Layout.cshtml

@@ -9,6 +9,16 @@
 	<link rel="stylesheet" type="text/css" href="~/css/Fonts.css" />
 	<link rel="stylesheet" type="text/css" href="~/css/Socicon.css" />
 
+	@if (Context.Request.Cookies.ContainsKey("useComicSans"))
+	{
+		<style type="text/css">
+			body
+			{
+				font-family: 'Comic Sans MS', 'Consolas', 'SegoeMDL2Assets';
+			}
+		</style>
+	}
+
 	<script type="text/javascript">
 		function ToggleMenu()
 		{