feat: Always have available form fields visible (closes #1)

Author: smessie

app/templates/index.hbs

@@ -42,7 +42,7 @@
 
   <div class="row">
     <div class="col-md-4">
-      <div class="card">
+      <div class="card sticky-top">
         <div class="card-body">
           <h5 class="card-title">
             Available form fields