.body{
  margin: 0;
}
.main_content {
    max-width: 750px;
    margin: auto;
    font-family: 'ヒラギノ角ゴ Pro W3','Hiragino Kaku Gothic Pro',sans-serif;
    line-height: 1.5;
}

@media screen and (min-width:751px) {
  .main_content {
    font-size: 10px;
    /* 10px / 16px = 62.5% */
  }
}

@media screen and (max-width: 750px) {
  .main_content {
    font-size: 1.33vw;
    /* 10px / 750px = 1.33% */
  }
}

.main_content img,
.main_content video {
  display: block;
  height: auto;
  width: 100%;
  max-width: 100%;
}

.section{
  margin: 0;
  padding: 0;
}

/*-----------------------------------------------------
  use
-------------------------------------------------------*/
.use_video {
  width: 67em;
  margin: 0 auto 4em;
  aspect-ratio: 16 / 9;
}

.use_video iframe {
  width: 100%;
  height: 100%;
}

/*-----------------------------------------------------
  offer
-------------------------------------------------------*/
.offer,
.offer .offer_01,
.offer .offer_02 {
  position: relative;
}

.offer a,
.offer .offer_arrow {
  position: absolute;
  width: 96%;
  left: 0;
  right: 0;
  margin: auto;
  z-index: 1;
}

.offer .offer_01 a {
  bottom: 16%;
}

.offer .offer_02 a {
  bottom: 4.5%;
}

.offer .offer_arrow {
  top: 42.5%;
  width: 34.6em;
}

/*-----------------------------------------------------
  qa
-------------------------------------------------------*/
.caution_item_tab_wrap {
  background: #eae9e9;
  font-size: 1.8em;
  padding: 0 1.6em 2em;
  margin-bottom: 0px;
  line-height: 1.5;
}
.tab_cont {
  width: 100%;
  padding: 1.5em 1em 2em;
  background: #fff;
  border: solid 1px #aaa;
  border-top: none;
}
.tab_cont.active {
  display: block;
}
.tab_cont_inner {
  max-height: 16em;
  margin-top: 1em;
  padding: 0 1em;
  overflow-y: scroll;
}
.tab_cont_inner::-webkit-scrollbar {
  width: 0.2em;
}
.tab_cont_inner::-webkit-scrollbar-thumb {
  background: #aaa;
  box-shadow: none;
}
.tab_cont_inner::-webkit-scrollbar-track {
  border: none;
}
.caution_item_box p {
  margin-bottom: 1em;
}
.item_detail_caution_headline03_wrap {
  margin-bottom: 1em;
  font-size: 1.3em;
}
.item_detail_caution_headline03_wrap p {
  font-size: 0.73em;
  font-weight: 700;
}
.item_detail_caution_headline03_wrap h3 {
  margin-bottom: 5px;
  font-weight: 700;
}
.tab_cont_inner ol > li:not(:last-child) {
  margin-bottom: 1em;
}

@media screen and (max-width: 750px) {
  .caution_item_tab_wrap {
    font-size: 2.4em;
    padding: 0 1.2em 2em;
  }
  .tab_cont {
    padding: 0.5em 0.5em 1.8em;
  }
}


/*-----------------------------------------------------
  footer
-------------------------------------------------------*/
.footer .footer_top{
  margin-top: 12em;
}