how to add a download button in html code example

Example 1: how to download file html button

<a href="file.doc">Download!</a>

Example 2: how to add stylish download buttom

<a 
  href="https://s3-us-west-2.amazonaws.com/ky22o6s6g8be80bak577b17e34bb93cex3.pdf"
  download="{{ user.name | slugify }}-{{ 'now' | date: "%Y" }}-tax-return.pdf">
  Download your {{ 'now' | date: "%Y" }} Tax Return
</a>