body {
      background-color: #fff;
      line-height: 1.75;
      position: relative;
    }
    .container{
      position: relative;
      padding-bottom: 80px;
    }
    .container::after {
      content: 'Copyright © 一般財団法人 日本私学教育研究所 All Rights Reserved.';
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      position: absolute;
      z-index: 0;
      bottom: 0;
      text-align: center;
      overflow: hidden;
      height: 80px;
      color: #fff;
      background: #3B3B4A;
    }

    @media screen and (max-width: 640px) {
      .container::after {
        font-size: 10px;
        padding: 0 16px;
        box-sizing: border-box;
      }
    }

    a {
      color: #a59aca;
    }

    .banner {
      width: 100%;
      height: 72px;
      display: block;
      position: relative;
      z-index: 0;
      top: 0;
      background: url(https://www.shigaku.or.jp/assets/images/shigaku_logo.png) no-repeat left 16px top 16px / 430px auto , #4569E0;
    }

    @media screen and (max-width: 640px) {
      .banner {
        position: static;
        height: 56px;
        background: url(https://www.shigaku.or.jp/assets/images/shigaku_logo.png) no-repeat center top 8px / auto 48px , #4569E0;
      }
    }

    .content {
      width: 100%;
      max-width: 100%;
      margin: 0 auto;
      overflow: hidden;
      z-index: 10;
      box-sizing: border-box;
      position: relative;
    }

    .form-contaienr {
      width: 100%;
      max-width: 900px;
      margin: 40px auto;
      background-color: #fff;
      display: block;
      padding: 36px;
      z-index: 10;
      position: relative;
      box-shadow: 0 0 30px -5px rgba(0, 0, 0, 0.12);
    }

    .form-title {
      width: 100%;
      max-width: 900px;
      margin: auto;
      padding: 40px;
      font-size: 2rem;
      display: flex;
      justify-content: center;
      align-items: center;
      box-sizing: border-box;
      position: relative;
      z-index: 2;
    }
    .form-title::before {
      content: "";
      display: block;
      position: absolute;
      width: 102vw;
      height: 100%;
      top: 0;
      left: 50%;
      transform: translateX(-50%);
      background-color: #4569E0;
      z-index: -1;
    }

    @media (max-width: 640px) {
      .content {
        top: 0;
        width: auto;
        padding: 0;
      }
      .form-contaienr {
        width: auto;
        padding: 24px 16px;
        margin: 0;
        box-shadow: none;
      }
      .form-title {
        height: auto;
        font-size: 20px;
        padding: 4px 16px 24px;
        background: #4569E0;
        margin: auto;
      }
    }