@charset "UTF-8";

* {
  margin: 0;
  padding: 0;
}

header {
    background: linear-gradient(to bottom, #a0d8ef, #6fb3d2, #4a90a4);
    padding-top: 2em;
}

.responsive-img {
      max-width: 100%;
      height: auto;
    }

.container{
    width: 90%;
    max-width: 1120px;
    margin: 0 auto;
    color: white;
}

nav {
    margin-left: 85%;
    font-size: 16px;
    font-weight: 700;
    padding: 10px 30px 10px 30px;
    display: inline-block;
    background-color: black;
    border-radius: 6px;
    letter-spacing: 2px;
       
}

ul {
    list-style-type: none;
    padding-left: 0;
}

main {
        padding-top: 0.5em;
}

body {
    background-color:#dcdcdc;
}

.main_form {
    background-color: white;
    width: 90%;
    max-width: 1120px;
    margin: 10px auto;
    border-radius: 15px;
}
.formrun-embed {
    margin-top: 10px;
}

@media screen and (max-width: 768px) {
  /* コンテナの幅と余白調整 */
  .container {
    width: 95%;
    padding: 0 1em;
    text-align: center;
  }

  /* ナビゲーションを画面幅に合わせて中央に */
  nav {
    margin-left: 0;
    margin-top: 1em;
    font-size: 14px;
    padding: 8px 15px;
    display: inline-block;
    border-radius: 6px;
  }

  /* メインフォームの幅と余白調整 */
  .main_form {
    width: 95%;
    margin: 1em auto;
    padding: 1em;
  }

  /* 画像を画面幅いっぱいに調整 */
  .responsive-img {
    max-width: 100%;
    height: auto;
  }

  main {
    padding-top: 1em;
  }
}