Cards are very versatile and a common design pattern on the web.
With the Card content block you can use any combination of image, title, subtitle and text. Additionally, you can wrap the card in an accessible clickable link.
Unlike other content blocks, the width of cards default to "Third." The assumption here is that you will want to create a grid of content with cards and that three cards next to each other will create a three-column layout. Of course cards can be set to other widths to create other layouts.
In the ‘Card Settings’ you can modify the width and provide a unique identifier.