Can you be a bit more specific in your explanation?
Did you just want 1 list, with 3 columns? I've created a screen with 3 lists next to each other using dataview. The CSS for the container and thumbnail for each is this:
Then I have a container that requires 3 lists. The container layout is like this, with a flex of 0.3 so they each take up 1/3 and sit next to each other:
padding: 2% 2% 0% 3.3%;
text-shadow: 1px 2px #333;
/* BELOW IS THE CSS FOR EACH WALL COMPONENT */
margin: 30px 30px 30px 30px;
Does that help you?