image in Promotion headline doesn't response on mobile

Hi Mahesh, I use the below css code you suggested and it helps with the issue I had a month ago. Could you please also advise the css so that the picture responses on a mobile as at present the name MATT is cut off on the left and right. Website is now online: http://mattfurniture.co.uk/ Many Thanks Petra #promotion-message .section { background-image: url("http://mattfurniture.co.uk/wp-content/uploads/2016/02/matt-furniture-logo-rex.png") !important; background-position: center center; background-repeat: no-repeat !important; background-size: cover; }