Help with photos - blank space

[Eladstar5 (Elad Starr)]

Hi guys
I made a website for my artworks and I have problem with the pictures,I do not know why ,but there is a blank space created between the pictures.
how can i fix it?

tnx,
Elad
http://ilanstarr.com/

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Here is my public share link: LINK
(how to access public share link)

[Eka (Ekaterina)]

Hi, @Eladstar5
Your pictures is different in height. Make them with one height. Screenshot by Lightshot
OR use element Columns.