diff --git a/app/views/shared/_header.html.erb b/app/views/shared/_header.html.erb
index 1b8b8295f..daa456d56 100644
--- a/app/views/shared/_header.html.erb
+++ b/app/views/shared/_header.html.erb
@@ -18,6 +18,7 @@
         <div class="small-12 medium-6 column">
           <%= image_tag(header.image.variant(:large),
                         class: "margin",
+                        style: "width: 100%;",
                         alt: header.image.title) %>
         </div>
       <% end %>