멋쟁이사자처럼 블록체인 5화

https://likelion-blockchain.notion.site/edc74742f41540e39fe86f0f286ba092

https://www.blockchain.com/explorer/blocks/btc?page=1

https://emn178.github.io/online-tools/sha256.html

alt shift 아래방향키 => 복사

object-fit: cover; => 비율이 깨지지가않는다.

@media (min-width: 640px) {
  .container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .container {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .container {
    grid-template-columns: repeat(4, 1fr);
  }
}