@media screen and (max-width: 1000px) {
  header {
    height: 10vh;
    background: url("../img/people.png") no-repeat bottom right 5px;
    background-size: 400px;
  }
  header h1 { line-height: 0; }
  h2 {
    text-align: center;
    font-size: 24px;
  }
  #download {
    width: 100%;
    margin: 40px auto;
  }
  #description { width: 100%; }
}
@media screen and (max-width: 600px) {
  header { background: none; }
  footer {
    position: relative;
    width: 100%;
    margin-top: 50px;
    padding: 20px 0;
    font-size: 14px;
  }
  footer .white_line { display: none; }
  #help #description span { margin: 0 1% 0 3%; }
  #help #description p { margin: 0 3%; }
  #app_name {	padding-bottom: 0; }
  #app_name div:nth-child(1) {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    padding: 40px 0;
  }
  #app_name div h1 { font-size: 180%; }
  #app_name div img {
    width: 80px;
    height: 80px;
    border-radius: 15px;
  }
  #app_name div:nth-child(2) {
    display: block;
    height: auto;
    padding: 10px 0;
    text-align: center;
  }
  #app_name div p {
    width: 80%;
    margin: 10px auto 20px;
    font-size: 15px;
    color: #ffffff;
  }
  #download h2 {
    width: 90%;
    margin: 0 auto;
    font-size: 20px;
  }
  #download .qr_code {
    display: block;
    width: 100%;
    margin: 30px auto;
  }
  #download .qr_code div {
    width: 60%;
    margin: 0 auto;
  }
  #download .qr_code div:first-child { margin-bottom: 100px; }
  #download .qr_code div a {
    width: 100%;
    height: 100%;
    margin: 10px 0;
  }
  #download .qr_code div a img:first-child {
    width: 100%;
    height: auto;
    padding: 0 10px;
    box-sizing: border-box;
  }
  #download .qr_code div p { width: 100%; }
  #download p {
    width: 90%;
    margin: 20px auto;
    font-size: 14px;
  }
  #description { padding: 30px 0 0 0; }
  #description h2 {
    width: 90%;
    margin: 26px auto 46px auto;
    border-bottom: 2px solid #d9d9d9;
    font-size: 20px;
  }
  #description .point {
    display: block;
    width: 100%;
    margin: 0;
  }
  #description .point div {
    width: 90%;
    margin: 50px auto 20px;
    padding: 0;
  }
  #description .point h3 {
    display: block;
    text-align: center;
    font-size: 24px;
    background: none;
  }
  #description .point p {
    margin: 0 auto;
    text-align: center;
    font-size: 14px;
  }
  #description .point img {
    display: block;
    margin: 0 auto;
  }
  #description .second {
    display: flex;
    flex-direction: column;
  }
  #description .second img { order: 2; }
  #description .second div { order: 1; }
  .line {
    width: 80%;
    height: 2px;
  }
}