Expected behavior

When copying the code for the "Jumbotron with image overlay" form here to my index.html file for testing purposes, the image within the said jumbotron does not appear to be similar to the one seen on the website

Actual behavior

The image does not resize and center within the jumbotron

Resources (screenshots, code snippets etc.)

Missing from the css and scss files downloaded - free edition:

.card.card-image {
-webkit-background-size: cover;
background-size: cover;
background-position: center;
width: 100%; }

Hence my question: is this Jumbotron part of the free edition (as it appears to be - no PRO marking) or not (in this case it probably needs to be marked as such)?