For a masonry like display you can use card columns. You can change the column number per breakpoint in the CSS. Search for .card-columns.
This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.
This card has supporting text below as a natural lead-in to additional content.
Last updated 3 mins ago
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat.
This card has a regular title and short paragraphy of text below it.
Last updated 3 mins ago
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.
This is another card with title and supporting text below. This card has some additional content to make it slightly taller overall.
Last updated 3 mins ago