Are these two structures of 1,3-dichlorocyclobutane enantiomers?

[![enter image description here](https://i.stack.imgur.com/YZIx3.jpg)](https://i.stack.imgur.com/YZIx3.jpg)


According to me they are not enantiomers because the mirror image can be rotated by $180^\circ$ to get the same compound.
Giving it a little more 3-D look:


[![my attempt](https://i.stack.imgur.com/pAGUn.jpg)](https://i.stack.imgur.com/pAGUn.jpg)


But the book says they are enantiomers. I don’t understand how?


