As for screen resolution, nothing crazy a regular 27" monitor not ultrawide and it shows up on my macbook as well.
for that other example, it was another website probably using a different plugin but it was more of a question around custom styling for you to get it close, (center, shorter width and rounded corners)
I’ve also shared the info about the browser and screen width with the dev team.
Regarding the styling options like in your example, you can use this code in the Custom CSS field on the Settings tab of your widget’s settings to achieve this: