Create a GCD,HCF,LCM Calculator in html,css and javascript.

Add navbar in your tool's html file. You can copy the navbar from index.html.
Add screenshot of your tool in, PR message and also in the folder of your tool
Before Making the PR Pull the latest changes that have been made to the repository

Note: Please Don't Make Any Changes In `index.html` AND `contributors.html` Note: Only make changes to the folder that you have created for your tool/utility

I have;

[ ] Read contibuting.md
[ ] Followed all the guidelines
[ ] Followed the directory Structure
[ ] updated readme.md
[ ] add your name in the footer of your tool.html file (if you created length conversion tool then add your name to length.html file you created)
[ ] provide below mentioned details if you want your name to be added in contributors.html
[ ] mail, twitter, github profile link.