Basic blog preview card with basic frontend tools

One thing about this project is that I was very focused on details. I wanted to focus on exact sizes to the pixel, which meant I went back and forth a lot. The problem is that the desktop design is for 1440p resolutions while I am working on a 1080p monitor. I haven't found a good solution to manage this size difference and count it in for the sizes in the code. What would be a more efficient way to tackle this problem?