add hamburgers css from vendor

Author: ZakaCoding

css/main.css

@@ -33,4 +33,48 @@ h1 {
     font-weight: bolder;
     margin: 20px 2px;
     vertical-align: baseline;
-}
+}
+
+/* CSS for menu */
+.menuToggle {
+    display: block;
+    position: absolute;
+    top: 0px;
+    left: -300px;
+    z-index: 99;
+    -webkit-user-select: none;
+    user-select: none;
+
+    background-color: whitesmoke;
+    width:300px;
+    height: 100%;
+
+    /* transision animation */
+    transition-duration: 0.4s;
+    transition-timing-function: ease;
+}
+
+/* trigger if active */
+.menu-active {
+    left : 0px;
+}
+
+.menu {
+    margin-top: 100px;
+    padding-left: 20px;
+}
+
+.menu a {
+    text-decoration: none;
+
+    /* transition: color 0.3s ease; */
+}
+
+.menu a:hover {
+    color: #4D4D4D;
+}
+
+#hamburger {
+    position: relative;
+    z-index: 999;
+}

vendor/hamburgers

@@ -0,0 +1 @@
+Subproject commit c9adb729e2966e235f38218ad167033bc5e3cbc3