Trying embedding html

docs/howto/geometry_viewer.rst

+Geometry viewer
+===============
+
+.. raw:: html
+
+    <embed>
+        <div style="background:red">Hahahahahahaha</div>
+        <script>
+            console.log("hahaha");
+        </script>
+    </embed>
\ No newline at end of file

docs/index.rst

@@ -30,6 +30,7 @@ ATHENA Software
    howto/use_singularity
    howto/s3_file_storage
    howto/beagle_generator
+   howto/geometry_viewer
 
 .. toctree::
    :maxdepth: 1