diff --git a/adminer/static/default.css b/adminer/static/default.css
index 1d9d4dd4..62906f30 100644
--- a/adminer/static/default.css
+++ b/adminer/static/default.css
@@ -23,7 +23,7 @@ th { background: #eee; text-align: left; }
 thead { position: sticky; top: 0; }
 thead th { text-align: center; padding: .2em .5em; }
 thead td, thead th { background: #ddf; }
-fieldset { display: inline; vertical-align: top; padding: .5em .8em; margin: .8em .5em 0 0; border: 1px solid #999; }
+fieldset { display: inline; vertical-align: top; padding: .5em .8em; margin: .8em .5em 0 0; border: 1px solid #999; border-radius: 5px; }
 p { margin: .8em 20px 0 0; }
 img { vertical-align: middle; border: 0; }
 td img { max-width: 200px; max-height: 200px; }