Add main navigation bar

Make donations and invitations accessible to everyone

app/assets/stylesheets/main_nav.scss

@@ -0,0 +1,31 @@
+@import "variables";
+
+#main-nav {
+  width: 100%;
+  text-align: center;
+  background-color: #efefef;
+
+  .wrapper {
+    width: $content-width;
+    max-width: $content-max-width;
+    margin: 0 auto;
+  }
+
+  ul {
+    li {
+      display: inline;
+
+      a {
+        display: inline-block;
+        padding: 1.5rem;
+        text-decoration: none;
+        color: $text-color-discreet;
+
+        &.active {
+          color: $text-color-body;
+          border-bottom: 2px solid #ffd000;
+        }
+      }
+    }
+  }
+}