@import url('https://cdn.jsdelivr.net/npm/bootstrap-icons@1.13.1/font/bootstrap-icons.min.css');
.bg-img {
  background-image: url('https://learnwithnakamura.s3.ap-northeast-1.amazonaws.com/bootstrap5/bOy4OPu98lI.jpg');
  /* coverで覆うように上下左右を拡大してくれる */
  background-size: cover;
  background-position: center 30%;
}

body {
  font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
}