Cards are literally a small rectangle or any other shape which is associated to a singular thought. These elements usually offer a summarized version of a larger page with more details. In other words, cards are full of interesting and interactive features like images, links, buttons, texts, etc that allow the users to be directed to the respective page if they were interested in the topic. They are perfect for showcasing your posts or even different sections of your website. For example, you can have the different categories bound to cards with icons and place in the page where the visitors are more likely to see. With that said, like any other component of a website, cards can also be stylized and designed in thousands of different ways. Just remember that all the different designs and features you add to your card suggests one main thing and that is clicking on the card to discover more of that content.
Here in this post, we have some black cards with animation and a rectangular shape. The dark theme in this Bootstrap black card is perfect for the eyes as it avoids eye strain and the turquoise really stands out on the background. The Bootstrap animating cards also have a hover effect where the card lights up, the icon starts to spin and zoom in, and a page flip effect appears on the top right corner.