/* formのデフォルト設定をリセット */
.searchform-body input,
.searchform-body button,
.searchform-body select,
.searchform-body textarea {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background: transparent;
  border: none;
  border-radius: 0;
  font: inherit;
  outline: none;
}

.searchform-body textarea {
  resize: vertical;
}
/* コンテンツ */
.pc .header-container .header_main .header-btn > .searchform-body {
    position: absolute;
    top: 120px;
    width: 100%;
    left: 0;
    right: 0;
    margin: auto;
    background: #2537c2;
    z-index: 1;
    height: 0;
    padding: 0;
    overflow: hidden;
    box-sizing: content-box;
    transition: .3s;
}
.pc .header-container .header_main .header-btn .accordionButton.open + div {
    padding: 20px 0;
}
header form input[type="submit"] {
    font-family: "Font Awesome 5 Free";
    font-weight: 700;
    font-style: normal;
    font-variant: normal;
    text-rendering: auto;
    color: #fff;
    font-size: 25px;
    flex-basis: 50px;
    margin: 0;
    cursor: pointer;
}

header form input[type="text"] {
    background-color: #fff;
    display: block;
    box-sizing: border-box;
    padding: 14px 20px;
    border-radius: 3px;
    margin: 0;
    flex: 1;
}

header form {
    display: flex;
    justify-content: center;
    width: 1040px;
    margin: auto;
}
@media (max-width: 991px) {
    header form {
        display: flex;
        justify-content: center;
        width: 100%;
        margin: 0 auto 30px;
    }
  }