Banner image with button in adobe campaign or html

[pushpad15690171]

I have a use-case to add a button over a banner image over an email and make the button clickable but not the image but in outlook the button comes after the image , it seems outlook doesn't support this , like it does not support background image , is their a way to sort this. e.g. the banner below has 2 buttons both should be clickable seprately in same banner but not able to do it for outlook specfically using html also