Redude Scroll Area

I looks like you could just add the class “container” to your “my-extra-widget” div or to the textwidget within it and that would create your desired outcome. I’m not sure if you have a plugin that allows you to add classes to your widgets, but you could use that, or you’ll need to adjust your code in your theme.

Or you could add this css to News Tickers > Settings page:

#mtphr-dnt-2329 {
  max-width: 940px;
  margin: 0 auto;
}