[docs] CSS overflow scroll fix for desktop view.

Author: doubleInc

site/less/article.less

@@ -1,5 +1,6 @@
 body > main > article {
-  overflow: scroll;
+  overflow-x: auto;
+  overflow-y: scroll;
   padding-bottom: 4rem;
   ul {
     padding-inline-start: 2rem;

site/less/layout.less

@@ -36,23 +36,23 @@ body {
     > nav {
       display: none;
       width: 16rem;
-      overflow: scroll;
+      overflow: auto;
       margin-left: 1rem;
     }
     > article {
       flex: 1;
       padding: 0 1rem;
       min-width: 100vw;
       max-width: 50rem;
-      overflow: scroll;
+      overflow: auto;
       &#home {
         max-width: 84rem;
       }
     }
     > aside {
       display: none;
       width: 16rem;
-      overflow: scroll;
+      overflow: auto;
       margin-right: 1rem;
     }
   }