Blog Section Customization

I want to significantly reduce the size of the images on the blog section and I’d like to show just 3 posts.

Right now with the default settings the 3rd image moves down below the other two images. I would like to have all 3 images on one row with some space in between with the text over each image towards the lower part of the image.

When I tried to this by adding custom css the images would change size but then the rest of the text on the other sections moved and I could not successfully align the text beneath each image correctly.