Exercise of Layaout, i wonder is my code for this Exercise wrong

[Gogo]

I checked and both codes work the same, but i wonder if and why is my code wrong
This is my code

[Gogo]

And this is the code from Mosh

[Gogo]

And here i have the problem that the image which should be bigger and contain 4 cells(it is containig 4 cells but the image is not bigger)