OK, I did it!
And I managed also to change the width on the sidebar, so perfect! Thank you very much Alchymyth!
Thank you Alchymyth, but I don’t have a header.php in my child theme! Should I look in the parent theme? or is it something else?
Oh yeahhh! OMG, I can’t believe it! All came back into place (or disappeared as wanted) by just putting back this parenthesis I had removed by mistake! Thank you very much Andrew!! (and Stephencottontail)
Problem solved! 🙂