Bootstrap - Card

I've tried placing the card within a col inside of a row inside of a container, or simply within a container div, but no matter what I do it

Bootstrap 4 Basic table with card snippet for your project this snippet is created using HTML, CSS, Bootstrap 4, Javascript

bootstrap card Bootstrap 4 Basic table with card snippet for your project this snippet is created using HTML, CSS, Bootstrap 4, Javascript

bootstrap button Небольшой пример текста, который должен основываться на названии карточки и составлять основную часть содержимого карточки Копировать div class=card style