Margin Extension in Chrome with OffiDocs

DESCRIPTION

Calculate Margin, has pre-defined values 10,15,20,25,30,35,40% or you can enter a custom margin percentage value.

Any bugs or…

Calculate Margin, has pre-defined values 10,15,20,25,30,35,40% or you can enter a custom margin percentage value.

Any bugs or improvements please let me know and I will try improve it as it's my first extension i have made while learning to code.
Update 1.1 - Updated Package name so it's changed in the Chrome Store
Update 1.2 - Added error checking,make sure only ints are used in the user input. Error message added if any non INT characters are used.

Margin Extension web extension integrated with the OffiDocs Chromium online