Many thanks again. I wanted to retain the transparency of the header because a solid one obscures part of the image. By looking at all the ‘site-header’ lines in style.css I found this on line 1895: ‘background: rgba(247, 142, 63, 0.3);’ The problem with this is that any colour is going to clash with some of the images. The answer, as I see it, is to make the header background grey. I have done this by changing to: background: ‘rgba(153, 153, 153, 0.3);’