div#footer_area {
  position: fixed;
  bottom: 0;
  width: 100%;
  max-width: 1280px;
  margin: auto;
  height: 54px;
  background-color: #FFFFFF;
}
div#footer_area ul {
  display: flex;
  height: 100%;
  justify-content: space-around;
  align-items: center;
}
div#footer_area ul li {
  display: flex;
  width: 25%;
  height: 100%;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #A6A5C4;
  cursor: pointer;
}
div#footer_area ul li img {
  width: 25px;
}
div#footer_area ul li span {
  font-size: 13px;
  padding: 0;
  margin: 0;
  margin-top: 5px;
}
div#footer_area ul li.tapped {
  background-color: rgba(255, 0, 0, 0.2);
}

div#agreement_area {
  display: none;
  position: fixed;
  bottom: 0;
  width: 100%;
  margin: auto;
  height: calc(100vh - 90vw - 54px);
  background-color: #FFFFFF;
  padding: 30px 20px;
  font-size: 2.3vh;
  line-height: 3.0vh;
  z-index: 100;
}
div#agreement_area p {
  height: 70%;
}
div#agreement_area div#btn_area {
  width: 100%;
  height: 30%;
  text-align: center;
}
div#agreement_area div#btn_area button {
  background-color: #667;
  color: #fff;
  padding: 15px 10px;
}

@media screen and (min-width: 1280px) {
  div#footer_area {
    height: 70px;
  }
  div#footer_area ul li img {
    width: 35px;
  }
  div#footer_area ul li span {
    font-size: 17px;
    margin-top: 5px;
  }
}