What is included in the concept of "portfolio"?

Question

Career in IT

I began to think about a career and, having looked at vacancies, they everywhere demand a portfolio.
As I understand it, this is a link to a github, where, after downloading the files, you can open a page with styles and animations?

Answer 1

A portfolio is your work, which should demonstrate to a potential Customer / employer: what you are capable of as a specialist in this field.
Judging by the question, you want to do front-end.
You can create a template on any hosting, including https://github.com or surge.sh to demonstrate a real "live" layout to the Customer.
To see, he will not need to download anything: he will simply follow the link that you give him in your portfolio with a picture for this work.

Answer 2

if you are a programmer, then github is suitable;
if a designer or layout designer, then examples of sites and designs

Answer 3

Depending on who you want to be.
You can link to your work on the internet if you are a webmaster.
You can organize a gallery on your site if you are a designer
On github if you are making applications