Problem with inside-block alignment

Hello guys! I am working on a website with a custom wordpress template. All the functionality is in place as well as the mobile version, but I am having a problem with alignment of inside-block elements as I can’t get them to behave the way I want them to upon media queries for larger screen sizes.

I want to achieve a layout for the recent posts on the frontpage like this, but currently my website looks like this (please ignore the silly photos) . Does anybody know what I can do to get these post divs to align like I want it?

Thanks in advance! Let me know if you need code snippets or something similar in order to make sense of this.