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sriharsha tallapanenisriharsha tallapaneni 

design_project__c is custom object which has child opportunity which is look up relationship

Scenario-
How to make lightning Component design_Project__c details page  with fields (Design Project Name,Company Name,Company Contact,Onwer,LastModified By FIelds) click of quick action buitton on opportunity page
ShirishaShirisha (Salesforce Developers) 
Hi Sriharsha,

Greetings!

You can use the lightning:actionOverride to override the standard buttons with the lightning component.Please find the sample lightning component to override the Standard New button:

https://trailhead.salesforce.com/content/learn/projects/workshop-override-standard-action/override_4

Kindly mark it as best answer if it helps so that it can help others in the future.

Warm Regards,
Shirisha Pathuri