diff --git a/Documentation/sources/_static/css/custom.css b/Documentation/sources/_static/css/custom.css
new file mode 100644
index 00000000..bc851485
--- /dev/null
+++ b/Documentation/sources/_static/css/custom.css
@@ -0,0 +1,4 @@
+/* fix for theme */
+.navbar .navbar-nav li a {
+    margin: 12.5px 12px 12.5px 12px !important;
+}
diff --git a/Documentation/sources/conf.py b/Documentation/sources/conf.py
index ca5ec2ab..e07821a4 100755
--- a/Documentation/sources/conf.py
+++ b/Documentation/sources/conf.py
@@ -130,6 +130,11 @@
 # so a file named "default.css" will overwrite the builtin "default.css".
 html_static_path = ['_static']
 
+# paths rel to html_static_path
+html_css_files = [
+    'css/custom.css'
+]
+
 # Custom sidebar templates, must be a dictionary that maps document names
 # to template names.
 #