How to redesign a schema?

kindly tell me the procedure about redesign the schema viewer to be a two column layout .

In what program are you trying to redesign the schema viewer?

I m trying to redesign a Taskcluster schema viewer .

Kindly help me ASAP . bcz i have to write a content about it .

Can you explain a bit more what you want to achieve?
Also, I get the feeling you are pressuring people because you have something to do in a short time.
People are here to give help, if they want and on their own time. Under no circumstances though they are here to do the work for you.
Are you doing the FCC lessons? If yes, have you already done the responsive design/Bootstrap section?