[React] Fixed progress bar responsiveness

[srujanmelam]

[React] Progress-bar challenge is not responsive #199

Title : [React] Progress-bar challenge is not responsive

Issue No. : #199

Code Stack : REACT

Close #199

Checklist:

• [] I have mentioned the issue number in my Pull Request.
• [] I have commented my code, particularly in hard-to-understand areas
• [] I have created a helpful and easy to understand README.md
• [] I have updated the Index.html file for my contribution

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