update navigation view

assets/css/app.scss

@@ -876,6 +876,30 @@ $links: (
     }
 }
 
+@media screen and (max-width: 500px) {
+    .small-menu {
+        > a {
+            display: none;
+        }
+    }
+}
+
+@media screen and (max-width: 450px) {
+    .navigation {
+        a {
+            padding: 10px 13px;
+        }
+    }
+}
+
+@media screen and (max-width: 400px) {
+    .navigation {
+        a {
+            padding: 7px 10px;
+        }
+    }
+}
+
 @media screen and (max-width: 719px) {
     .content {
         width: 100%;