Answers for "how to activate link in bootstrap"

undo commit

# KEEP CHANGES
git reset --soft HEAD~1

# REMOVE CHANGES
git reset --hard HEAD~1

git cancel last commit

git reset --soft HEAD~1

bootstap link

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">