Currently the Card/Black widget sets 2 posts one 1 row. Is it also possible to change the php to 1 post for each row and additionally remove the spacing between the posts?
Do you mean you want to transform all the TH widgets to 1 column per row? The provided code will only work for Card/Block widget. Please check the code for Card/block Post widget and let us know. We will then provide you the code to that will work for other widgets which previews as multi-column per row.