Remove contribution component from mobile temporarily (github#27866)

* Remove contribution component from mobile temporarily

* Update components/page-footer/Contribution.tsx

Co-authored-by: Grace Park <[email protected]>

* cleanup

Co-authored-by: Grace Park <[email protected]>

Author: peterbe

components/page-footer/Contribution.tsx

@@ -1,4 +1,5 @@
 import { GitPullRequestIcon } from '@primer/octicons-react'
+
 import { useMainContext } from 'components/context/MainContext'
 import { useTranslation } from 'components/hooks/useTranslation'
 
@@ -11,7 +12,7 @@ export const Contribution = () => {
     : 'https://github.com/github/docs'
 
   return (
-    <div className="f5 contribution">
+    <div className="hide-sm hide-md f5 contribution">
       <h2 className="f4 mb-3">{t`title`}</h2>
       <p className="max-w-xs color-fg-muted mb-3">{t`body`}</p>
       <a className="btn color-border-accent-emphasis" href={contributionHref}>