Can we add CSS to SharePoint Group Site Template

Question

Hi ,
We have a SharePoint Online site with Template GROUP#0 i.e. Office 365 Group associated Team Site.
I wanted to add Custom CSS to a Calendar list. I am unable to see Content Editor Webpart or Script Editor webparts.
I have enabled Publishing features as well.
Do you know is there a way to add custom css on top of calendar.

Appreciated your help!
Thanks

Answer 1

Hi @Krishna ,

You need to allow custom script on your sharepoint site to add Content Editor Webpart or Script Editor webparts. Please refer to this article for more: allow-or-prevent-custom-script

You can allow custom script on a particular site immediately with the below powershell command:

Connect-SPOService https://tenant-admin.sharepoint.com  
Set-SPOsite https://tenant.sharepoint.com/sites/yoursite -DenyAddAndCustomizePages 0  

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Answer 2

Manipulating the DOM, thus CSS customizations, are not supported with Modern sites. You would need to otherwise use an SPFx solution but as Microsoft may make changes to the DOM at any time, you shouldn't expect any CSS changes to function indefinitely.

Answer 3

Hi @Krishna ,

Another workaround is to change the Alternate CSS URL in Master Page. This needs to enable publishing feature.

1. Upload your css file to a library.

2. Go to site settings-> Master page, expand the Alternate CSS URL option. Add the reference to your css file.

Test Result: