Photo gallery not shown properly.

Dear sir/madam,
When I make a photo gallery and place the photo’s in two columns there is no problem.
When I place the created text into a text box created within the layout made with MidiMax the photo’s are not placed in columns rows but in a single column.
What am I doing wrong?
http://alettazeeman.co.nf/culturele-invloeden-in-het-interieur/
Aletta Zeeman