diff --git a/docs/docs_feedback_sphinxext.py b/docs/docs_feedback_sphinxext.py
index 90f2ddd74..86eb3d61a 100644
--- a/docs/docs_feedback_sphinxext.py
+++ b/docs/docs_feedback_sphinxext.py
@@ -155,7 +155,6 @@ def setup(app: Sphinx) -> Dict[str, Union[bool, str]]:
         rebuild=rebuild_trigger,
     )
 
-    app.add_css_file('important-admonition.css')
     app.connect('source-read', _modify_rst_document_source_on_read)
 
     return {
diff --git a/docs/html/_static/important-admonition.css b/docs/html/_static/important-admonition.css
deleted file mode 100644
index a73ae2e4d..000000000
--- a/docs/html/_static/important-admonition.css
+++ /dev/null
@@ -1,8 +0,0 @@
-.admonition.important {
-  background-color: rgb(219, 250, 244);
-  border: 1px solid rgb(26, 188, 156);
-}
-
-.admonition.important>.admonition-title {
-  color: rgb(26, 188, 156);
-}