.mailform {
  margin: 0 auto 120px;
  text-align: left;
  width: 854px;
}

dl {
  width: 100%;
  margin: 0 auto 20px;
  text-align: left;
  display: flex;
}

dt {
  width: 30%;
}

dd {
  width: 65%;
}


input[type="submit"][value="送信"] {
  font-family: inherit;
  padding: 10px 30px;
  font-size: 16px;
  background: none;
  border-radius: 8px;
  border: none;
  background: #ff7bac;
  color: #fff;
  cursor: pointer;
}

input[type="button"][value="戻る"] {
  font-family: inherit;
  margin-left: 15px;
  padding: 10px 30px;
  font-size: 16px;
  background: none;
  border-radius: 8px;
  border: 1px solid #ff7bac;
  color: #ff7bac;
  display: inline-block;
  cursor: pointer;
}

input[type="submit"][value="送信"]:hover,
input[type="button"][value="戻る"]:hover {
  opacity: .8;
}

input[type="button"][value="戻る"].single {
  margin-left: 0;
}

.confirmation {
  margin-bottom: 40px;
}

.submit_content dl {
  padding: 12px;
  margin-bottom: 4px;
  border-radius: 4px;
  border-bottom: 1px solid #f9f9f9;
}

.submit_content dt {
  width: 200px;
  display: table-cell;
  vertical-align: middle;
}

.submit_content dd {
  width: 368px;
  padding-left: 8px;
  display: table-cell;
  vertical-align: middle;
}

.mailform dd input[type="text"],
.mailform dd select,
dd textarea {
  width: 100%;
  max-width: 100%;
  font-family: inherit;
  padding: 7px 12px;
  font-size: 14px;
  border-radius: 4px;
  border: 1px solid #000;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, .05);
}

.mailform dd input[type="radio"],
.mailform dd input[type="checkbox"] {
  box-shadow: none;
  border: 5px solid #ccc;
}

.err {
  color: red;
}

.completion {
  margin-bottom: 50px;
  text-align: center;
}

.confirmation_btn {
  font-family: inherit;
  padding: 10px 30px;
  font-size: 16px;
  background: none;
  border-radius: 8px;
  border: none;
  background: #ff7bac;
  color: #fff;
  cursor: pointer;
  display: block;
  margin: 30px auto;
}

@media screen and (max-width: 768px) {
  .mailform {
    margin: 0 auto 120px;
    text-align: left;
    width: 90%;
  }

  dl {
    width: 100%;
    margin: 0 auto 20px;
    text-align: left;
    display: block;
  }

  dt {
    width: 100%;
    margin-bottom: 15px;
  }

  dd {
    width: 100%;
  }


  input[type="submit"][value="送信"] {
    font-family: inherit;
    padding: 10px 30px;
    font-size: 16px;
    background: none;
    border-radius: 8px;
    border: none;
    background: #ff7bac;
    color: #fff;
    cursor: pointer;
  }

  input[type="button"][value="戻る"] {
    font-family: inherit;
    margin-left: 15px;
    padding: 10px 30px;
    font-size: 16px;
    background: none;
    border-radius: 8px;
    border: 1px solid #ff7bac;
    color: #ff7bac;
    display: inline-block;
    cursor: pointer;
  }

  input[type="submit"][value="送信"]:hover,
  input[type="button"][value="戻る"]:hover {
    opacity: .8;
  }

  input[type="button"][value="戻る"].single {
    margin-left: 0;
  }

  .confirmation {
    margin-bottom: 40px;
  }

  .submit_content dl {
    padding: 12px;
    margin-bottom: 4px;
    border-radius: 4px;
    border-bottom: 1px solid #f9f9f9;
  }

  .submit_content dt {
    width: 200px;
    display: table-cell;
    vertical-align: middle;
  }

  .submit_content dd {
    width: 368px;
    padding-left: 8px;
    display: table-cell;
    vertical-align: middle;
  }

  .mailform dd input[type="text"],
  .mailform dd select,
  dd textarea {
    width: 100%;
    max-width: 100%;
    font-family: inherit;
    padding: 7px 12px;
    font-size: 14px;
    border-radius: 4px;
    border: 1px solid #000;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, .05);
  }

  .mailform dd input[type="radio"],
  .mailform dd input[type="checkbox"] {
    box-shadow: none;
    border: 5px solid #ccc;
  }

  .err {
    color: red;
  }

  .completion {
    margin-bottom: 50px;
    text-align: center;
  }

  .confirmation_btn {
    font-family: inherit;
    padding: 10px 30px;
    font-size: 16px;
    background: none;
    border-radius: 8px;
    border: none;
    background: #ff7bac;
    color: #fff;
    cursor: pointer;
    display: block;
    margin: 30px auto;
  }
}