trying...

python_docs_theme/layout.html

@@ -77,6 +77,7 @@ <h3>{{ _('Navigation') }}</h3>
             <script type="text/javascript" src="{{ pathto('_static/copybutton.js', 1) }}"></script>
             <script type="text/javascript" src="{{ pathto('_static/menu.js', 1) }}"></script>
             <script type="text/javascript" src="{{ pathto('_static/search-focus.js', 1) }}"></script>
+            <script type="text/javascript" src="{{ pathto('_static/smooth.js', 1) }}"></script>
             <script type="text/javascript" src="{{ pathto('_static/themetoggle.js', 1) }}"></script>
         {%- endif -%}
     {%- endif -%}

python_docs_theme/static/pydoctheme.css

@@ -1,14 +1,5 @@
 @import url('classic.css');
 
-/* Smooth scroll */
-html {
-    scroll-behavior: auto;
-}
-
-html:has(:target) {
-    scroll-behavior: smooth;
-}
-
 /* Common colours */
 :root {
     --good-color: rgb(41 100 51);

python_docs_theme/static/smooth.js

@@ -0,0 +1,15 @@
+window.addEventListener('load', function() {
+    document.documentElement.style.scrollBehavior = 'auto';
+
+    const target = window.location.hash;
+    if (target) {
+        window.scrollTo(0, 0);
+        document.querySelector(target)?.scrollIntoView();
+    }
+
+    document.querySelectorAll('a[href^="#"]').forEach(anchor => {
+        anchor.addEventListener('click', function(e) {
+            document.documentElement.style.scrollBehavior = 'smooth';
+        });
+    });
+});