adding apply link to mobile nav

opentech/public/navigation/templates/navigation/primarynav.html

@@ -17,3 +17,5 @@
         {% endfor %}
     </ul>
 </nav>
+<a href="/apply" class="link link--button-secondary link--mobile-standout">Apply</a>
+

opentech/static_src/src/sass/components/_link.scss

@@ -4,6 +4,10 @@
         display: inline-block;
     }
 
+    &--button-secondary {
+        @include button($color--purple);
+    }
+
     &--button-transparent {
         @include button(transparent);
         color: $color--white;
@@ -16,4 +20,17 @@
     &--footer-signup {
         margin-top: 1rem;
     }
+
+    &--mobile-standout {
+        display: block;
+        width: 100%;
+        max-width: 250px;
+        margin: 2rem auto 0;
+        font-weight: $weight--bold;
+        text-align: center;
+
+        @include media-query(tablet-portrait) {
+            display: none;
+        }
+    }
 }