diff --git a/app/views/application/_sidebar_header.html.erb b/app/views/application/_sidebar_header.html.erb
index 88a1fff4a..9e7877f8a 100644
--- a/app/views/application/_sidebar_header.html.erb
+++ b/app/views/application/_sidebar_header.html.erb
@@ -1,4 +1,4 @@
-<div class="d-flex w-100">
+<div class="d-flex">
   <h2 class="flex-grow-1 text-break"><%= title %></h2>
   <div>
     <button type="button" class="btn-close" aria-label="<%= t("javascripts.close") %>"></button>
diff --git a/app/views/site/about.html.erb b/app/views/site/about.html.erb
index 277fb1384..f6f6ba137 100644
--- a/app/views/site/about.html.erb
+++ b/app/views/site/about.html.erb
@@ -11,7 +11,7 @@
         </div>
       </div>
       <div class='row'>
-        <div class="w-100 px-5 py-4 bg-dark">
+        <div class="px-5 py-4 bg-dark">
           <h1 class="text-white fw-light"><%= t ".used_by_html", :name => tag.span("OpenStreetMap", :class => "user-name") %></h1>
         </div>
       </div>