diff --git a/_static/css/rtd_theme_mods.css b/_static/css/rtd_theme_mods.css
new file mode 100644
index 0000000..e449bde
--- /dev/null
+++ b/_static/css/rtd_theme_mods.css
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2019-present Open Networking Foundation
+ *
+ * Licensed 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.  */
+
+/* Don't restrict content width on the RTD theme
+ * from: https://stackoverflow.com/a/32898444 */
+
+.wy-nav-content {
+  max-width: none;
+}
+
+.wy-table-responsive table td, .wy-table-responsive table th {
+  white-space: normal;
+}
+
+.wy-side-nav-search {
+  background-color: #d9d9d9;
+}
+
+.wy-side-nav-search>div.version {
+  color: #404040;
+}