diff --git a/assets/nocolor.css b/assets/nocolor.css
index 3cb1d5e..abc8edf 100644
--- a/assets/nocolor.css
+++ b/assets/nocolor.css
@@ -94,8 +94,7 @@ li > p
 
 .admonitionblock
 {
-    margin-bottom: 1em;
-    margin-left: 1em;
+    margin: 0.5em auto 0.5em 1em; /* trbl */
 }
 
 .admonitionblock td