.img-top {
  position: relative;
  color: #fff;
}
.capt-h1 {
  border-bottom: 1px solid #fff;
  font-weight: 700;
}
.capt-h1 span {
  font-size: 70%;
  font-weight: 100;
}
.img-top div p span {
  font-size: 80%;
  padding-left: 8px;
}
.img-top div {
  position: absolute;
}
.top-sp {
  display: none;
}
section > p {
  margin: 80px 0;
  line-height: 1.8em;
}
h2 {
  margin: 40px 0;
  display: inline-block;
  position: relative;
}
h2:before {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -16px;/*線の上下位置*/
  display: inline-block;
  width: 60px;
  height: 4px;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);/*位置調整*/
  border-radius: 2px;
}
.wrap-h2 {
  text-align: center;
}
section ul {
  list-style: none;
}
section ul li {
  margin: 80px 0;
  padding: 20px;
  background-color: #fafafa;
  border: 1px solid #e2e2e2;
}
section ul li:last-of-type {
  margin: 80px 0 0;
}
section ul li > div > div > div {
  display: flex;
}
section ul li > div > div {
  margin-top: 40px;
  display: flex;
}
section ul li:nth-of-type(3) > div > div > div {
  margin-top: 0;
}
/* 講演タイトル */
h3 {
  padding: 0 12px;
  margin: 0;
  font-size: 20px;
  font-weight: 700;
}
/* 講演時間 */
section ul li > p {
  margin-bottom: 20px;
  font-weight: 700;
}
/* 講演者 */
section ul li div div p:first-child {
  width: 150px;
  height: 150px;
  margin-left: 20px;
}
section ul li div div p:first-child img {
  border-radius: 8%;
  max-width: 150px;
}
/* 講演者肩書 */
section ul li div div p:last-child {
  font-size: 12px;
}
/* 概要 */
section ul li > div > p {
  padding: 32px;
  background-color: #fff;
  border-radius: 8px;
}
.tx-bottom {
  margin: 20px 0 80px;
  text-align: right;
}
.sec-btn {
  text-align: center;
}
/* セミナー終了後活性にする　ここから */
.sec-btn button:hover {
  cursor: default;
  opacity: 1;
}
.sec-btn button {
  background: gainsboro;
}
/* ここまで */
.sec-btn > div > button {
  height: 60px;
  border: 0;
  border-radius: 10px;
  color: #fff;
  font-size: 16px;
}
/*------- PC start -------*/
@media all and (min-width: 481px) {
  .capt-h1 {
    padding-bottom: 12px;
    margin-top: 0;
    text-align: left;
    font-size: 2.2vw;
  }
  .capt-h1 {
    font-size: clamp(20px, 2vw, 32px);
  }
    /* 日付 */
  .img-top div > p:nth-child(2) { 
    padding: 8px 0;
    font-size: clamp(16px, 1.6vw, 28px);
  }
  .img-top img.top-pc {
    width: 100%;
    min-height: 480px;
    object-fit: cover;
    object-position: left;
  }
  .wrap-img-top {
    width: 32%;
    padding-left: 10%;
    top: 50%;
    transform: translateY(-50%);
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
  }
  .img-top div:nth-child(2) {
    width: 50%;
    top: 50%;
    right: 0%;
    transform: translateY(-50%);
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
  }
  section ul li div div p:last-child {
    padding: 20px;
    margin-left: 20px;
    border-left: 1px solid #e2e2e2;
  }
  section ul li > div > p {
    margin-top: 40px;
  }
  .sec-btn > div > button {
    width: 500px;
  }
}
/*------- タブレット start -------*/
@media all and (min-width: 481px) and (max-width: 1023px) {
  .capt-h1 {
    padding-right: 20px;
    font-size: 3vw;
  }
  .wrap-img-top {
    width: 30%;
    padding-left: 40px;
  }
  .img-top div img {
    height: auto;
  }
  .img-top div p {
    font-size: 2.5vw;
  }
  .img-top div:nth-child(2) {
    width: 60%;
  }
  .sec-btn > div > button {
    width: 80%;
  }
}
/*------- sp start -------*/
@media all and (max-width: 480px) {
  section > p {
    padding: 12px;
  }
  .img-top img.top-pc {
    display: none;
  }
  .img-top div:nth-child(2) {
    bottom: 8vh;
    text-align: center;
  }
  .img-top > div {
    width: 100%;
  }
  .top-sp {
    display: block;
  }
  .img-top > div img {
    height: auto;
    width: 70%;
    margin: 10vh auto;
  }
  .img-top > img.top-sp {
    height: 80vh;
    width: 100%;
    min-height: 640px;
    object-fit: cover;
  }
  .img-top div {
    text-align: center;
  }
  .capt-h1 {
    padding-bottom: 20px;
  }
  .img-top div p {
    padding: 12px 0;
  }
  section ul li > div > div > div, section ul li > div > div {
    flex-direction: column;
    margin: 20px auto 10px;
  }
  section ul li div div p:last-child {
    padding: 4px 20px;
    margin: 20px 0 0;
  }
  section ul li div div p:first-child {
    width: 150px;
    height: 150px;
    margin: 0 auto;
  }
}