diff --git a/docs/extra.css b/docs/extra.css
new file mode 100644
index 00000000..c11ad6b1
--- /dev/null
+++ b/docs/extra.css
@@ -0,0 +1,5 @@
+.bs-sidebar {
+    padding: 0;
+    max-height:90vh;
+    overflow-y: auto;
+}
\ No newline at end of file
diff --git a/mkdocs.yml b/mkdocs.yml
index 08333b21..c5867ea1 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -4,5 +4,5 @@ theme:
     custom_dir: docs_modification/
 plugins:
   - search:
-        prebuild_index: true
-  
\ No newline at end of file
+      prebuild_index: true
+extra_css: [extra.css]
\ No newline at end of file
diff --git a/readthedocs.yml b/readthedocs.yml
index af2dd02a..47eaa0a4 100644
--- a/readthedocs.yml
+++ b/readthedocs.yml
@@ -2,6 +2,8 @@ version: 2
 
 python:
   version: 3.6
+  install:
+    - requirements: docs/requirements.txt
 
 mkdocs:
   configuration: mkdocs.yml
\ No newline at end of file