anchor.diff:      position:absolute;
       top:50%;
       left:50%;
  -    margin:-50px 0 0 -100px; /* [-(height/2)px 0 0 -(width/2)px] */
  +    margin:-100px 0 0 -100px; /* [-(height/2)px 0 0 -(width/2)px] */
       display:none;
     }
   </style>
  
positive.code: <h1>JOBSEEKR</h1>
  <%= form_tag("/search", method: "get") do %>
  <%= label_tag(:location, "Your location") %>
  <%= text_field_tag :location, nil, placeholder: "Ex. 25 Chapel st, Brooklyn" %>
  
negative.code: <%= text_field_tag "position[]", nil, placeholder: "Web Developer" %>
  <%= submit_tag("Search") %>
  <% end %>
  </div>
  <div id="popup" class="popup">
  <%= form_tag("/search", method: "get") do %>
  <%= label_tag(:location, "Your location") %>
  