diff --git a/docs/css/extra.css b/docs/css/extra.css
index 2f58f224..1230d796 100644
--- a/docs/css/extra.css
+++ b/docs/css/extra.css
@@ -1,37 +1,9 @@
-.bs-sidebar.well {
-    /* margin-bottom: 0; */
-}
-
-.bs-sidebar .nav > li > a:hover,
-.bs-sidebar .nav > li > a:focus {
-    border: none;
-    border-left: 2px solid;
-}
-
-.bs-sidebar .nav > .active > a,
-.bs-sidebar .nav > .active:hover > a,
-.bs-sidebar .nav > .active:focus > a {
-    border: none;
-    border-left: 2px solid;
-}
-
-@media (min-width: 992px) {
-    .bs-sidebar.affix {
-        /* top: 60px; */
-        /* bottom: 0px; */
-        top: 80px;
-        bottom: 23px;
-        overflow: auto;
-    }
-}
-
-@media (min-width: 1200px) {
-    .bs-sidebar.affix-bottom,
-    .bs-sidebar.affix {
-        width: 280px;
-    }
-
-    .container > .col-md-9 {
-        padding-left: 40px;
+@media (min-width: 960px) {
+    html {
+        scroll-behavior: smooth;
+    }
+    
+    .md-content__inner > ul:nth-child(5) {
+        display: none;
     }
 }