How can I format this javascript code using bootstrap and HTML?

See more:

Javascript

HTML5

bootstrap

My teacher wants us to enhance this javascript code using bootstrap and form it into a footnote. thanks :)

const last = moment(document.lastModified, "MM/DD/YYYY");
const now = moment();
document.write('The last modified date is: ' + last.format("YYYY-MM-DD") + ' and the current date is: ' + now.format("YYYY-MM-DD"));

What I have tried:

Im not sure where to start exactly