Fix register page css.

app/views/seminars/show.html.erb

@@ -28,6 +28,12 @@
     window.alert("<%=notice%>");
   </script>
 <% end %>
+<style type="text/css">
+  .checkbox input[type=checkbox], .checkbox-inline input[type=checkbox], .radio input[type=radio], .radio-inline input[type=radio] {
+    position: relative;
+    margin: 0;
+  }
+</style>
 <%= form_for @seminar_signup, url: seminars_path, html: {class: "content form-horizontal" , :id=>"new-seminar-signup"} do |f| %>
   <fieldset>