feat: use css for overflow and not js

Author: dylanarmstrong

README.md

@@ -36,9 +36,6 @@ Bypass imgur login
 #### logic-immo
 Fix this site so it works with adblock
 
-#### overflow
-Force `overflow: auto` to avoid blocking from modals
-
 #### reddit-filter
 Adds a filter at end of tagline that has a popup to filter on subreddit, domain, or user (only on r/all). They're stored in the localStorage keys starting with 'filter'. Filtered items must be removed from localStorage manually.
 
@@ -81,6 +78,7 @@ Adds first message reaction score on alternate-history, sufficientvelocity and s
 * hacker-news
 * guardian
 * lemonde
+* overflow (`overflow: auto` on body/html)
 * reddit
 * royalroad
 * speedrun

overflow.js

@@ -0,0 +1,13 @@
+/* ==UserStyle==
+@name        overflow-style
+@description overflow-style
+@match        *://*/*
+==/UserStyle== */
+
+/**
+* Force overflow: auto to avoid blocking from modals
+*/
+body,
+html {
+  overflow: auto !important;
+}