* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: "Noto Sans JP";
}
html {
  scroll-behavior: smooth;
}
body {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
}
img {
  width: 100%;
}
a {
  text-decoration: none;
  color: #231815;
}
ul,
li {
  list-style: none;
}
.container {
  width: 100%;
  height: 100%;
  overflow-y: scroll;
}

.is-md-show {
  display: none;
}
@media (max-width: 767px) {
  .is-md-show {
    display: block;
  }
  .is-md-hide {
    display: none;
  }
}