Ion-select button background at top of page

I am trying to use an ion-select on a page (for the size field on this page). The button background for the ion-select ends up displaying a black button background at the top of the page (under the Item Details) which partially covers the field at the top of the page. I am not sure what CSS attribute this is to make is transparent or white. The same thing happens when I added an ion-select to other pages.

Thanks in advance.