A card is a "box" around some content with a border, padding and margins that make it stand out.
<k-card>
This is a card
</k-card>
A label gives some text in a box on the top border of the card, helping identify the purpose of the contents.
<k-card label="I'm a Label">
This is a card
</k-card>
new Card()new Card(string label)
label: stringThe label for the card.
label: stringThe label for the card. Syncs with the label attribute.
setLabel(string label): voidSets the label for the card.