Hello,

In order to change color or image on the categories pages, navigate to shop page and set image or color as described here https://xtemos.com/docs/woodmart/options-for-pages/

Please add this code to the Theme Settings > Custom CSS > Global

@media screen and (max-width: 1024px) { 
 body .whb-header {
    margin-bottom: 40px;
}
}

I am checking the buttons, they are next to each other http://prntscr.com/lphs6n please, clarify.

Best Regards