Added a hamburger menu for the navbar

pages/contact.html

@@ -13,6 +13,9 @@
 </head>
 
 <body>
+	<button class="mobile-nav-toggle" aria-label="Toggle menu">
+	☰
+	</button>
 	<nav class="navbar">
 	<div class="navbar-top-icons">
 	<div class="icon-item">

pages/projects.html

@@ -20,6 +20,9 @@
 </head>
 
 <body>
+	<button class="mobile-nav-toggle" aria-label="Toggle menu">
+	☰
+	</button>
 	<nav class="navbar">
 	<div class="navbar-top-icons">
 	<div class="icon-item">