form {
  width: 100%;
  margin: auto;
  padding-bottom: 8.78477306vw;
}

/* head_box */
.form_item .head_box {
  width: 100%;
  display: flex;
  align-items: center;
}

/* 必須 */
.form_item .head_box p.must {
  margin-left: 15px;
  white-space: nowrap;
  color: #FF0D0D;
}

/* エラー文 */
.form_item .element_box p.errors {
  color: #dc0000;
  margin-top: 5px;
}

/* element_box */
.element_box {
  width: 100%;
}

.input_wrap {
  width: 100%;
}
.double_text_input_wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* submitボタン */
.submit_btn {
  width: 90%;
  max-width: 460px;
  min-width: 200px;
  padding: 1.464128843vw;
  background-color: #1782ED;
  text-align: center;
  display: block;
  border-radius: 8px;
  margin: auto;
  margin-top: 3.3%;
  cursor: pointer;
  transition: all 0.5s;
  color: #ffffff;
}
@media screen and (max-width: 768px) {
  .submit_btn {
    margin-top: 60px;
    padding: 12px;
  }
}

.submit_btn:hover {
  background-color: #449BF1;
}

/* テキストボックス用スタイル */
.input_item.text {
  width: 100%;
  padding: 18px;
  border: 1px solid #DCDCDC;
}

.input_item.half {
  width: 48%;
}
/* テキストエリア用スタイル */
.input_item.textarea {
  width: 100%;
  padding: 18px;
  height: 20vw;
  max-height: 270px;
  min-height: 160px;
  resize: none;
  border: 1px solid #DCDCDC;
}
.privacy_txt {
  margin-top: 6%;
  text-align: center;
}
.privacy_txt a {
  color: #0A4DFB;
}
.caution {
  padding: 4% 4.4%;
  margin-top: 6%;
  background-color: #F4F4F4;
}

/* ====================================================================================================== */
/* レスポンシブ */
/* ====================================================================================================== */
@media screen and (max-width: 768px) {
  .form_item {
    flex-direction: column;
  }

  .form_item:not(:first-child) {
    margin-top: 30px;
  }

  .head_box {
    width: 100%;
  }

  .form_item:first-child .head_box {
    border-top: unset;
  }

  .form_item:first-child .element_box {
    border-top: unset;
  }

  .element_box {
    width: 100%;
  }

  .input_item.text {
    padding: 12px;
  }
  .submit_btn{
    font-size: 16px;
  }
}

@media screen and (max-width: 480px) {
  .submit_btn {
    margin-top: 40px;
  }
  .caution {
    padding: 13px 15px;
    margin-top: 40px;
  }
  .caution .f14 {
    font-size: 14px;
  }
}