Remove whitespace between header and body Storefront 2.0.0

Hello all,

I’m having some trouble removing the whitespace below my header in the new update of Storefront.

I had previously removed it by adding this code to my child theme:

.site-header {
padding-bottom: 0 em;
}

However, now that’s not working. Has there been a change in the spacing of the header for this theme? Thanks all.

Cheers