[GitHub] [kafka-site] showuon opened a new pull request #284: MINOR: Change the arrow direction based on the view state is expanded or not

[GitBox]

showuon opened a new pull request #284:
URL: https://github.com/apache/kafka-site/pull/284


   Change the arrow direction based on the view state is expanded or not. We 
can identify it's in expanded mode or not by checking the return value of 
toggle method. Reference: 
https://developer.mozilla.org/en-US/docs/Web/API/DOMTokenList/toggle
   
   
![image](https://user-images.githubusercontent.com/43372967/89490258-00d72500-d7df-11ea-8582-8bae5005a21e.png)
   
   
   
   
![image](https://user-images.githubusercontent.com/43372967/89490628-dcc81380-d7df-11ea-8335-8c4551253790.png)
   
   


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