.tutoimg{
  width:70%;
  margin:20px;
  border:solid 1px rgb(206, 206, 206);
}

#content h5 {
  margin-top:50px;
}

.sc {
  color:red;
  font-weight: bold;
}

a {
  text-decoration: none;
}

.navbar-brand-logo {
  height: 36px;        /* ← 大きさはここだけ調整 */
  width: auto !important;
  max-width: none;
}