Flipflop every other collection item in a collection list

UPDATE 9/30/2020: This layout is now achieved without any custom code by styling the "Even" items (available when you're styling a collection list item in the state dropdown under "Structure") to be in the "Row-Reverse" style for a flex-row. Previously as of 2019: There was a small line of CSS that was on the canvas which allows you to set a row-reverse style for every nth element (in this case every even numbered element) to have a reverse style within just one collection list