diff --git a/src/generators/html.cpp b/src/generators/html.cpp
index c61e426..dd7e523 100644
--- a/src/generators/html.cpp
+++ b/src/generators/html.cpp
@@ -61,6 +61,11 @@ void write_html(ostream &out, const vector &entries)
max-height: 10em;
max-width: 40ch;
}
+ summary
+ {
+ font-size: large;
+ font-weight: bold;
+ }