diff --git a/website/static/base/css/manual.css b/website/static/base/css/manual.css
index 93ed862..8ecd872 100644
--- a/website/static/base/css/manual.css
+++ b/website/static/base/css/manual.css
@@ -318,7 +318,7 @@ label[for=all-dropdowns-hidden] {
 
 /* In title and node titles, use Fira Sans as it is more pleasant and
    more compact than Helvetica.  */
-.settitle, .top, .chapter, .section, .subsection, .subsubsection {
+h1.settitle, h1.top, h2.chapter, h3.section, h4.subsection, h4.subsubsection {
     font-family: Fira Sans, sans;
     font-weight: bold;
 }