Can two developers in different location customize CSS at the same time?

I hired two developers to work on different tasks and have them the login info. Both developers will be adding custom code to the additional CSS section of WordPress to customize/complete their individual tasks.

Question: is there any downside if both developers are adding code at the same time?

I’m thinking that if one developer on their end thinks they are adding code to for example line 575…and similarly another developer thinks they are adding code to line 575 on their end, this could cause issues?

Please advise.


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