diff --git a/spec/_static/css/custom.css b/spec/_static/css/custom.css
new file mode 100644
index 000000000..35506ee5f
--- /dev/null
+++ b/spec/_static/css/custom.css
@@ -0,0 +1,3 @@
+s {
+    text-decoration: inherit;
+}
\ No newline at end of file
diff --git a/src/_array_api_conf.py b/src/_array_api_conf.py
index 490d3a2aa..e183082ec 100644
--- a/src/_array_api_conf.py
+++ b/src/_array_api_conf.py
@@ -211,3 +211,4 @@ def process_signature(app, what, name, obj, options, signature, return_annotatio
 
 def setup(app):
     app.connect("autodoc-process-signature", process_signature)
+    app.add_css_file('css/custom.css')