diff --git a/doc/en/_static/pytest.css b/doc/en/_static/pytest.css
new file mode 100644
index 00000000000..a9a86cf8c5b
--- /dev/null
+++ b/doc/en/_static/pytest.css
@@ -0,0 +1,11 @@
+/* Hide list bullets and top-level indent in TOC sidebar */
+.sidebar-scroll ul {list-style: none;}
+.sidebar-scroll > ul {padding-left: 0;}
+.sidebar-scroll li {margin: 0.4em 0;}
+/* Widen the events sidebar on the front page */
+@media (min-width: 46em) {
+    #features {
+        width: 50%;
+        margin-bottom: 1em;
+    }
+}
diff --git a/doc/en/_templates/style.html b/doc/en/_templates/style.html
deleted file mode 100644
index 400cb75ff97..00000000000
--- a/doc/en/_templates/style.html
+++ /dev/null
@@ -1,7 +0,0 @@
-<style>
-    ul {list-style: none;}
-    li {margin: 0.4em 0;}
-    @media (min-width: 46em) {
-        #features {width: 50%;}
-    }
-</style>
diff --git a/doc/en/conf.py b/doc/en/conf.py
index 0d440ec448a..4db962bdcb4 100644
--- a/doc/en/conf.py
+++ b/doc/en/conf.py
@@ -251,7 +251,7 @@
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-# html_static_path = ['_static']
+html_static_path = ["_static"]
 
 # If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
 # using the given strftime format.
@@ -274,7 +274,6 @@
         "globaltoc.html",
         "links.html",
         "sidebar/scroll-end.html",
-        "style.html",
     ],
     "**": [
         "sidebar/brand.html",
@@ -284,10 +283,13 @@
         "relations.html",
         "links.html",
         "sidebar/scroll-end.html",
-        "style.html",
     ],
 }
 
+html_css_files = [
+    "pytest.css",
+]
+
 # Additional templates that should be rendered to pages, maps page names to
 # template names.
 # html_additional_pages = {}