.contact {
  width: 700px;
  max-width: calc(100% - 80px);
  margin: 0 auto;
  padding: 100px 0 120px;
}

.contact-heading {
  margin-bottom: 70px;
}

.contact-heading h1 {
  font-size: 30px;
  font-weight: 500;
  margin: 0 0 20px;
}

.contact-heading p {
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
}
.contact-form {
  width: 100%;
}

.form-item {
  margin-bottom: 35px;
}

.form-item label {
  display: block;
  font-size: 15px;
  margin-bottom: 10px;
}

/* 必須 */
.form-item label span {
  font-size: 11px;
  margin-left: 8px;
  font-weight: 400;
}

/* 入力欄 */
.form-item input,
.form-item select,
.form-item textarea {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #ccc;
  background-color: transparent;
  padding: 14px;
  font-size: 15px;
  font-family: inherit;
}

/* お問い合わせ内容 */
.form-item textarea {
  resize: vertical;
}
.contact-submit {
  text-align: center;
  margin-top: 50px;
}
.contact-submit button {
  width: 220px;
  padding: 16px 0;
  border: 1px solid #777;
  background-color: #777;
  color: #fff;
  font-family: inherit;
  font-size: 15px;
  cursor: pointer;
  transition: 0.3s;
}

.contact-submit button:hover {
  background-color: #000;
  border-color: #000;
  color: #fff;
}
.contact-heading h1 {
  text-align: center;
  margin-top: 100px;
}
body.contact-page {
  background-color: #eeeeea;
}

@media (min-width: 768px) and (max-width: 1024px) {
  .contact {
    width: min(700px, calc(100% - 64px));
    padding: 130px 0 90px;
  }

  .contact-heading {
    margin-bottom: 52px;
  }

  .contact-heading h1 {
    margin-top: 70px;
    font-size: 28px;
  }
}

@media (max-width: 767px) {
  .contact {
    width: calc(100% - 40px);
    max-width: none;
    padding: 110px 0 72px;
  }

  .contact-heading {
    margin-bottom: 38px;
  }

  .contact-heading h1 {
    margin-top: 18px;
    margin-bottom: 14px;
    font-size: 26px;
  }

  .contact-heading p {
    font-size: 14px;
  }

  .form-item {
    margin-bottom: 26px;
  }

  .form-item label {
    font-size: 14px;
  }

  .form-item input,
  .form-item select,
  .form-item textarea {
    padding: 13px;
    font-size: 16px;
  }

  .contact-submit {
    margin-top: 38px;
  }

  .contact-submit button {
    width: min(100%, 260px);
    padding: 15px 12px;
  }
}
body.contact-page {
  background-color: #eeeeea;
}