diff --git a/docs/distributions/openstack.md b/docs/distributions/openstack.md
index a0e9bff5b0852c5049227add01f0230b4b5629d3..320804cfdf7ecdf5e3b1315a55d2a2f6d2cfcadc 100644
--- a/docs/distributions/openstack.md
+++ b/docs/distributions/openstack.md
@@ -93,7 +93,6 @@ that will open in a new tab.
 
   </fieldset>
 
-  <hr />
   <center>
     <button type="button" name="run" onclick="runImageTests()" disabled>Run 0 tests</button>
   </center>
diff --git a/docs/stylesheets/extra.css b/docs/stylesheets/extra.css
index 5e8bf9e0138e564a4d97f20912d574e673052081..7c7b94589985db33cd1a619b7934bdef1bb92763 100644
--- a/docs/stylesheets/extra.css
+++ b/docs/stylesheets/extra.css
@@ -18,10 +18,12 @@ form.testing {
   padding: 0.5em;
   margin: auto;
   max-width: 80%;
+  border-radius: 4px;
 }
 
 .testing input {
   border: 1px solid black;
+  border-radius: 4px;
   padding: 5px;
   margin: 5px;
 }
@@ -50,6 +52,7 @@ form.testing {
 
 .testing fieldset {
   margin-inline: 10px;
+  border-radius: 4px;
 }
 
 .testing legend {