Responsive multipage space tourism website

I would like to know, if there is a good way to make borders that appear below images at crew page stretch horizontally according to the design files? I was trying to put picture elements inside div container and play with the respective max-width and align-self properties but that didn't seem to work and images just get a huge gap between themselves and the border. I would also really appreciate any feedback regarding sizing because initially I was following a tutorial and then I had to readjust a lot of paddings and margins.