@media (max-width: 500px) {
  * {
    margin: 0;
    padding: 0;
    font-family: "MS Mincho";
    list-style: none;
    text-decoration: none;
  }

  footer {
    width: 100%;
    height: 120px;
    background-color: #000;
  }

  footer p {
    width: 120px;
    height: 16px;
    line-height: 120px;
    /* text-align: center; */
    color: #fff;
    margin: 0 auto;
  }
}