@media screen and (max-width: 900px) {
  html, body {
    min-width: initial;
    min-width: auto;
  }

  .loginBox {
    width: calc(100% - 40px);
    padding: 40px;
  }

  .emphasizeNotice {
    width: calc(100% - 40px);
    padding: 40px;
  }

  footer small {
    padding: 16px 20px;
    justify-content: space-between;
  }

  footer small * {
    width: auto;
  }
}