I am sure I have allready asked this here, but I can not find it anymore back in my topics.

Based on the width of you're screen you can see that images are not good aligned

www.glansbeton.be/projecten


If you are on a laptop you wil see that the right  title is just one word to long, and it breaks appart in a new line, so it is fucking up the whole visible

You could apply a fix height to the k2 items, check : osvaldas.info/flexbox-based-responsive-equal-height-blocks-with-javascript-fallback