Step10 not understanding portfolio

Hi all,
I am confused about what this means in the curriculum at freecodecamp . Step10

  • User Story #10: The height of the welcome section should
    ** be equal to the height of the viewport.**

Could someone please explain it to me.
Thanks
Steven

It means that it should be like this

#welcome-section {
    height: 100vh;
} 

You can try to see that the welcome section now has the whole height of the viewport. You can read more about viewport Units here.

Thank you for that article and the help as well.