fix: Improved mobile styling

fix: Severla context menus miss-positioned
fix: Search filters not large enough on mobile
fix: Deep black background on mobile to match native apps
fix: Sticky document header allowing horizontal scrolling on mobile

app/components/Button.js

@@ -134,7 +134,7 @@ export type Props = {|
   "data-event-action"?: string,
 |};
 
-const Button = React.forwardRef<Props>(
+const Button = React.forwardRef<Props, HTMLButtonElement>(
   (
     {
       type = "text",