diff --git a/datasette/templates/allow_debug.html b/datasette/templates/allow_debug.html
index 0f1b30f0..04181531 100644
--- a/datasette/templates/allow_debug.html
+++ b/datasette/templates/allow_debug.html
@@ -35,7 +35,7 @@ p.message-warning {
 
 <p>Use this tool to try out different actor and allow combinations. See <a href="https://docs.datasette.io/en/stable/authentication.html#defining-permissions-with-allow-blocks">Defining permissions with "allow" blocks</a> for documentation.</p>
 
-<form action="{{ urls.path('-/allow-debug') }}" method="get">
+<form action="{{ urls.path('-/allow-debug') }}" method="get" style="margin-bottom: 1em">
     <div class="two-col">
         <p><label>Allow block</label></p>
         <textarea name="allow">{{ allow_input }}</textarea>