You can set Layout Grid like design tools.
Tremendously useful tool, wish I'd found it much sooner. The grid is easy to use and set up. Unfortunately doesn't seem to allow for saving settings and you have to disable it to RClick an element into inspector. I gave this 3* I really want to give this more stars - those 2 features are worth a star each. [EDIT] You know what, after using this extension for another day, the RClick an element issue isn't really a problem, so now it's a 4* extension :)
Daniel Samuels
abdullahrafique565
https://designer.tools
tgohn
jffng
leocompson
https://www.felixniklas.com
https://www.medinnna.com
https://imagentleman.github.io
chYer
Dennis Novriandi
https://fenvox.com