Hi Geoff,
The inner Header is Contained at 995px
. It just looks that it’s stretched full width because of the background color of the Header’s parent container.
See: https://share.getcloudapp.com/7KuQQzAR
If you set this color in Appearance > Customize > Colors > Header > Background to transparent, you’ll see how it looks: https://share.getcloudapp.com/KouAA9J4
Once you’ve made that transparent, you can add this CSS to make sure that the background color of the inner container of the Header is white:
.inside-header.grid-container {
background-color:#fff;
}
Add this in Appearance > Customize > Additional CSS.
Hope this helps! Kindly let us know how it goes. 🙂