Added some styles

assets/styles/rimmington.sass

@@ -1,5 +1,46 @@
+@use "sass:color"
+
+//$primary-color: #3399ff
+$primary-color: cornflowerblue
+$primary-color-highlight: color.adjust($primary-color, $lightness: -10%)
+
+body
+  background: #eee
+
+a
+  color: $primary-color
+  transition: color 225ms ease-in-out
+  &:hover
+    color: $primary-color-highlight
+
+input[type=submit],
+button
+  background: $primary-color
+  color: #eee
+  border-radius: 8px
+  transition: all 225ms ease-in-out
+  &:hover
+    background: $primary-color-highlight
+    color: white
+
+#wrapper
+  background: white
+  padding: 1rem 2rem
+  border-radius: 8px
+
 #main-nav
   margin-bottom: 15px
+  background: $primary-color
+  border-bottom: 1px solid #eee
+
+  ul
+    background: none
+
+  a
+    color: #eee
+    font-weight: bold
+    &:hover
+      color: white
 
 h1.invalid
   color: red

views/layout.erb

@@ -17,7 +17,7 @@
   <%= erb :'partials/navbar', :locals => locals %>
 
   <!-- main content -->
-  <div class="grid-container">
+  <div id="wrapper" class="grid-container">
     <%= yield %>
   </div>
 </body>