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

  .top_page {
    /* position: relative; */
    /* top: -120px; */
    /* z-index: -1; */
    width: 100%;
    height: 380px;
    overflow: hidden;
    position: relative;
  }

  .welcome_text {
    font-size: 3em;
    color: #fff;
    width: 90%;
    text-align: center;
    position: absolute;
    transform: translate(-50%, -40%);
    top: 40%;
    left: 50%;
  }

  .welcome_text_sb {
    font-size: 1.3em;
    color: #fff;
    width: 90%;
    text-align: center;
    position: absolute;
    transform: translate(-50%, -80%);
    top: 80%;
    left: 50%;
    margin: 0;
  }

  .top_page > img {
  }

  .buy_section {
    width: 99%;
    height: 100%;
    margin: 100px auto 0;
    text-align: center;
  }

  .section_title {
    display: inline-block;
    width: 229px;
    font-size: 2em;
    margin: 0 auto 40px;
  }

  .buy_content {
    width: 90%;
    height: 45%;
    display: flex;
    flex-direction: column;
    margin: 0 auto;
    /* border: 1px solid #000; */
    /* justify-content: space-around; */
  }

  .buy_img {
  }

  .choice {
    width: 99%;
    height: 80%;
    border: solid #9c9b9a 2px;
    /* overflow: scroll; */
    margin: 0 15px;
    box-sizing: border-box;
    transition: background-image 0.5s;
    margin: 12px auto;
  }

  /* .choice:hover {
    background-image: linear-gradient(
      90deg,
      rgba(85, 85, 85, 1) 49%,
      rgba(0, 0, 0, 1)
    );
  } */

  .choice > p {
    margin: 8px;
    font-size: 1.5em;
  }

  .choice dt {
    font-size: 1.5em;
    margin: 50px 0 45px;
  }

  .choice dd {
    margin: 10px 0;
    font-size: 1.2em;
  }

  .choice dd > a {
    color: #000;
    font-weight: bold;
    font-family: ;
  }

  .choice > a {
    display: inline-block;
    width: 147;
    height: 40px;
    line-height: 40px;
    padding: 10px 30px;
    margin: 36px 0;
    border: solid 1px #00f;
    transition: color 0.3s, background-color 0.7s;
  }

  .choice > a:hover {
    color: #fff;
    background-color: #00f;
  }

  .others_section {
    width: 100%;
    height: 415px;
    background-color: #f3f3f3;
    text-align: center;
    display: flex;
    justify-content: center;
    margin: 12% 0 0 0;
  }

  .others_content {
    width: 485px;
    height: 330px;
    margin: auto 0;
  }

  .others_content > h3 {
    font-size: 2em;
    margin: 80px 0 0 0;
  }

  .others_content > p {
    font-size: 1.2em;
    margin: 50px 0 45px;
  }

  .others_content > a {
    width: 170px;
    height: 60px;
    line-height: 50px;
    color: #fff;
    background-color: #000;
    padding: 15px 40px;
    transition: color 0.1s, background-color 0.5s, border 0.9s;
  }

  .others_content > a:hover {
    color: #000;
    background-color: #fff;
    border: solid 1px #000;
    border-radius: 17px;
  }
}