Card one description. Would be wonderful if this works the way I hope it should. Three equal thirds.
Card two description goes here. Is it responsive?
Card three description. Find out how cool this can be today.
It doesn’t make sense to use the media and text. Just use a image block a heading block and a paragraph block.
Depending on how many of these you have throughout your site, You can add some padding and margin and border by targeting the WP block default styles. If need be you could add some custom classes although this is never preferred.
You can use the media queries at the breakpoints that WordPress uses to get a little bit more control.
You can’t use inline SVG so you want to fit a PNG pretty close or just go JPEG.