1 files changed, 9 insertions, 0 deletions

diff --git a/filters/headers.lua b/filters/headers.lua
new file mode 100644
index 0000000..ea9cde6
--- /dev/null
+++ b/filters/headers.lua
@@ -0,0 +1,9 @@
+function Header(el)
+    if el.level <= 3 then
+        local newchildren = pandoc.List()
+        newchildren:insert(pandoc.Span(el.content, { class = 's-headings__primary' }))
+        el.content = newchildren
+    end
+
+    return el
+end