As this is pretty unusual request I’d like to as whether you are creating an RTL (Right To Left) language website? If so, please set your WordPress to your RTL language and the theme will switch the layout automatically.
If you only want to change the position of these header elements, please try using this custom CSS:
thanks so much! It works well. It is not a RTF Website, just the Wish from my customer. I recommended him NOT to do that….
Anyway I hope she will switch her mind so it can stay in the right corner.