how to build a blog layout with no sidebar?

https://www.w3schools.com/howto/howto_css_blog_layout.asp

So I checked and this, I have this problem where the large image for each blog post has a really high height and so when I use 100% width it fills 70% of the page, the other issue is because there's no sidebar it looks odd and the text and title is at the bottom instead, so I am wondering what I would have to fix to make it look ok.

It looks like this, but even if I change the text font and size, it still looks really odd, how do you fix this without adding a side bar?