diff --git a/trac/htdocs/main.css b/trac/htdocs/main.css
index 525d83c..860b1d3 100644
--- a/trac/htdocs/main.css
+++ b/trac/htdocs/main.css
@@ -55,6 +55,15 @@ p {
 
 /* Styles for images in documentation and articles */
 
+img.inline, img.inlinetop {
+  border: solid 2px #88aa77;
+  padding: 2px;
+}
+
+img.inlinetop {
+  vertical-align: top;
+}
+
 img.math {
   vertical-align: middle;
   margin-left: 10px;