Is there a problem with my picture size?

Hi there, I’m looking at the frontpage of my site and realised that the pictures are not of the same size. Is this normal? Or are they supposed to be this way?

my site is


You can check how it should look on the GreatMag demo site here:

Please try to add three more posts. Let me know if you need more help.

Kind Regards, Roman.
aThemes Support