Tabs page - add scss page

Ionic Framework ionic-v3
1

The sample tabs app has a tabs page - but it does not include a scss page.

I have tried adding a scss page with the following:

 page-tabs {
      .goldbackground{
           background: rgba(243,226,199,1);
      }
 }

but it does not apply the css in the tabs page - if I remove the page-tabs { section then the css is applied as a global item.

Any pointers where I am going wrong?