apache#41532 - added custom css for google providers

docs/apache-airflow-providers-google/static/warnings.css

@@ -0,0 +1,27 @@
+/*!
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+div.admonition.warning {
+  background: #e8cccc;
+  font-weight: bolder;
+}
+
+.rst-content .warning .admonition-title {
+  background: #cc341d;
+}

docs/conf.py

@@ -320,7 +320,7 @@ def _get_rst_filepath_from_path(filepath: pathlib.Path):
 if PACKAGE_NAME in ["apache-airflow", "helm-chart"]:
     html_static_path = [f"{PACKAGE_NAME}/static"]
 else:
-    html_static_path = []
+    html_static_path = ["apache-airflow-providers-google/static"]
 
 html_static_path.append("sphinx_design/static/")  # Style overrides for the sphinx-design extension.
 
@@ -863,3 +863,5 @@ def skip_util_classes(app, what, name, obj, skip, options):
 def setup(sphinx):
     if "autoapi.extension" in extensions:
         sphinx.connect("autoapi-skip-member", skip_util_classes)
+
+        sphinx.add_css_file('warnings.css')