Columns stick to left / right [responsive]

Hey there

I’m in desperate need of help for the responsive design of my portfolio. I have 4 columns with 1 row on my desktop version and I want them to stack above each other as soon as they get into the mobile “checkpoint”. So instead of 1 row and 4 columns I want to have 2 columns and 2 rows stacking to the left respectively right

01 TITLE 150 x 200 EDITORIAL

to this

01 150 x 200

Thank you very much in advance!!


Here is my site Read-Only: [LINK]
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