Hi Kharis,
Tried your CSS code it made difference. Image alignment does work properly.
I think I worked out what’s happening. When you resize your browser window, the post summary elements will change their order sequence and the alignment works. Refresh the page and the post summary elements order sequence changes and the alignment does not work. There is something in your code that is changing order sequence of the post summary.
I have taken screen captures showing the behavior. I can email them to you.
URL: https://www.coolangattaseniors.com.au/latest-news/