Oh Love masonry theme not working out of box

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Hi, I'm new to Concrete5 and expected themes to work out of the box and look like the demo.
I don't know how to get the masonry layout working on the Oh Love theme. Any suggestions or guidance would be much appreciated. i have average html/CSS skills.
Out of the box the front page looks like Elemental layout.


https://www.concrete5.org/marketplace/themes/oh-love...