At the beginning of the course I learned to create structure using only HTML.
After we learned how to build a HTML structure, we were later introduced to CSS and how to use style elements.
After we understood and know how to work with HTML and CSS, we started to learn how to use classes in Bootstrap 4. Bootstrap is the most popular HTML, CSS, and JavaScript framework for developing responsive, mobile-first websites.
This page is very similar to our homework_10. (the application of Bootstrap 4)
The difference is that the class name of the card, in this page, is "card-column" but not "card-deck"
The reason is that when we use "card-deck", the set of cards will always have equal width and height. Therefore, I used "card-column" instead to create cards with different heights.
Note: the links in this page's cards are ineffective.