section.main {
  height: 100vh;
  overflow-y: scroll;
  overflow-x: hidden;
  background-color: white;
  -webkit-overflow-scrolling: touch;
}

section.main .top{
  background-image: url(./picture/back1.png);
  position: relative;
  background-size: cover;
  background-position: bottom;
  height: 36rem;
}

.top .title{
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  color: #FFFFFF;
  background-color: rgba(34, 34, 34, 0.76);
  position: absolute;
  padding: 20px 70px;
  letter-spacing: 0.5rem;
  bottom: 14rem;
}

.top:before{
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  top: 0;
  display: block;
  background: linear-gradient(#06AFD8, #167837);
  opacity: 0.5;
}

.top:after{
  content: '';
  position: absolute;
  display: block;
  background-repeat: no-repeat;
  background-image: url("./picture/back1-white.png");
  bottom: -2px;
  width: 100vw;
  background-position: bottom;
  height: 50vh;
  background-size: contain;
}

.top .title .main{
  font-size: 32px;
}

.top .title .sub{
  font-size: 24px;
}


@media (max-width: 1000px) {
  .top .title{
    padding: 15px 35px;
  }
}

@media (max-width: 900px) {
  .top .title{
    padding: 15px 20px;
    letter-spacing: 0.3rem;
  }
  .top .title .main {
    font-size: 26px!important;
  }
  .top .title .sub {
    font-size: 20px!important;
  }
}

@media (max-width: 520px) {
  .top .title{
    padding: 15px 10px;
    letter-spacing: 0.2rem;
  }
  .top .title .main {
    font-size: 22px!important;
  }
  .top .title .sub {
    font-size: 18px!important;
  }
  .news .news-content {
    letter-spacing: 0.1rem!important;
  }
}

@media (max-width: 420px) {
  .top .title .main {
    font-size: 20px!important;
  }
  .top .title .sub {
    font-size: 16px!important;
  }
}

@media (max-width: 420px) {
  .top .title .main {
    font-size: 15px!important;
  }
  .top .title .sub {
    font-size: 12px!important;
  }
}

.news{
  margin: 15px 40px;
  /*margin-top: 100px; /*added, shoud be deleted when open lab disapper later*/
}

.news input#MORE{
  display: none;
}

.news .news-logo{
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  color: #4A4A4A;
  letter-spacing: 0.5rem;
  font-weight: 700;
  font-size: 24px;
}


.news .news-contents{
  border-top: 2px solid #4A4A4A;
  overflow: hidden;
}

.news .news-content{
  letter-spacing: 0.3rem;
  padding: 10px;
}

.news .news-contents .news-content:nth-child(n+5){
  display: none;
}

.news .news-contents .news-content:nth-child(2n+1){
  background-color: #FAFAFA;
}

.news label{
  border: 2px solid #4A4A4A;
  color: #4A4A4A;
  display: inline-block;
  background: white;
  border-radius: 0.8rem;
  font-size: 0.8rem;
  padding: 0.1rem 2.4rem;
  letter-spacing: 0.3rem;
  cursor: pointer;
  margin-top: 10px;
}

.news input[type=checkbox]:checked ~ .news-contents .news-content:nth-child(n+5){
  display: flex!important;
}

.news input[type=checkbox]:checked + .labelmore label{
  display: none;
}

.news .labelmore{
  text-align: center;
  position: relative;
}

.lecture{
  margin: 15px 40px;
  margin-top: 100px;
}

.lecture .lecture-logo{
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  color: #4A4A4A;
  letter-spacing: 0.5rem;
  font-weight: 700;
  font-size: 24px;
}

.lecture .lecture-content{
  border-top: 2px solid #4A4A4A;

}

.lecture .lecture-content iframe{
  width: 27rem;
  height: 18rem;
}

.lecture .lecture-content .lecture-title{
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  color: #4A4A4A;
  letter-spacing: 0.7rem;
  font-weight: 700;
  font-size: 27px;
  padding-bottom: 14px;
  padding-top: 28px;
  border-bottom: 5px solid #4A4A4A;
}

.lecture .lecture-content .lecture-about{
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  color: #4A4A4A;
  letter-spacing: 0.5rem;
  font-weight: 600;
  font-size: 18px;
  padding: 15px 0px;
}

.lecture .lecture-content .youtubeaccess{
  border: 2px solid #4A4A4A;
  float: right;
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  color: #4A4A4A;
  letter-spacing: 0.3rem;
  font-weight: 600;
  font-size: 14px;
  padding: 15px 7px;
  border-radius: 4px;
  margin-bottom: 10px;
}

.openlab{
  margin: 15px 40px;
  /*margin-top: 100px;*/
}

.openlab .openlab-logo{
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  color: #4A4A4A;
  letter-spacing: 0.5rem;
  font-weight: 700;
  font-size: 24px;
}

.openlab .openlab-content{
  border-top: 2px solid #4A4A4A;

}

.openlab .openlab-content iframe{
  width: 27rem;
  height: 18rem;
}

.openlab .openlab-content .openlab-title{
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  color: #4A4A4A;
  letter-spacing: 0.7rem;
  font-weight: 700;
  font-size: 27px;
  padding-bottom: 14px;
  padding-top: 28px;
  border-bottom: 5px solid #4A4A4A;
}

.openlab .openlab-content .openlab-about{
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  color: #4A4A4A;
  letter-spacing: 0.5rem;
  font-weight: 600;
  font-size: 18px;
  padding: 15px 0px;
}

.openlab .openlab-content .btlink{
  border: 2px solid #4A4A4A;
  float: right;
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  color: #4A4A4A;
  letter-spacing: 0.3rem;
  font-weight: 600;
  font-size: 14px;
  padding: 15px 7px;
  border-radius: 4px;
  margin-bottom: 10px;
}

.openlab .openlab-content .mail-button{
  cursor: pointer;
}

.openlab .openlab-content .mail-button{
    border: 2px solid #4A4A4A;
    border-radius: 4px;
    display: inline-block;
    padding: 10px 15px;
    color: #4A4A4A;
    text-decoration: none;
    margin-top: 10px;
}



@media(max-width:1250px){
  .lecture .lecture-content .lecture-title{
    letter-spacing: 0.5rem;
    font-size: 23px;
  }

  .openlab .openlab-content .openlab-title{
    letter-spacing: 0.5rem;
    font-size: 23px;
  }
}

@media(max-width:520px){
  .lecture .lecture-content iframe{
    width: 18rem;
   height: 13rem;
  }
  .lecture .lecture-content .lecture-title{
    letter-spacing: 0.3rem;
    font-size: 16px;
  }
  .lecture .lecture-content .lecture-about{
    letter-spacing: 0.3rem;
    font-size: 14px;
  }
  .openlab .openlab-content iframe{
    width: 18rem;
   height: 13rem;
  }
  .openlab .openlab-content .openlab-title{
    letter-spacing: 0.3rem;
    font-size: 16px;
  }
  .openlab .openlab-content .openlab-about{
    letter-spacing: 0.3rem;
    font-size: 14px;
  }
}

.seminar{
  margin-top: 100px;
  position: relative;
  background-image: url("./picture/back2.png");
  background-size: cover;
}

.seminar:before{
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  top: 0;
  display: block;
  background: linear-gradient(#0028b9, #167878);
  opacity: 0.5;
}

.seminar .seminar-logo{
  position: relative;
  border-top: solid 2px #FFFFFF;
  border-bottom: solid 2px #FFFFFF;
  color: #FFFFFF;
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  text-align: center;
  font-size: 24px;
  letter-spacing: 0.4rem;
  padding: 20px 75px;
  max-width: 400px;
  margin-right: 40px;
  margin-bottom: 30px;
}

.seminar .seminar-logo:before{
  content: '';
  position: absolute;
  top: -7px;
  width: 2px;
  height: -webkit-calc(100% + 14px);
  height: calc(100% + 14px);
  background-color: #FFFFFF;
  left: 7px;
}

.seminar .seminar-logo:after{
  content: '';
  position: absolute;
  top: -7px;
  width: 2px;
    height: -webkit-calc(100% + 14px);
  height: calc(100% + 14px);
  background-color: #FFFFFF;
  right: 7px;
}

.seminar{
  padding: 50px;
}

.seminar .seminar-top{
  color: #FFFFFF;
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  position: relative;
  letter-spacing: 0.4rem;
  line-height: 2rem;
}

.seminar .seminar-top a{
  color: #ffc107;
}

.seminar .seminar-contents{
  position: relative;
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  font-size: 18px;
  letter-spacing: 0.5rem;
}

@media(max-width: 990px){
  .seminar .seminar-contents{
    font-size: 16px;
    letter-spacing: 0.3rem;
  }
}

@media(max-width: 850px){
  .seminar .seminar-contents{
    font-size: 12px;
    letter-spacing: 0.1rem;
  }
}

@media(max-width: 500px){
  .seminar .seminar-top {
    letter-spacing: 0.3rem;
    font-size: 0.8rem;
    margin-bottom: 15px;
  }
  .seminar .seminar-logo{
    font-size: 18px;
  }
}

@media(max-width: 410px){
  .seminar .seminar-contents{
    letter-spacing: 0rem;
  }
}

@media(max-width: 350px){
  .seminar .seminar-logo {
    padding: 20px 60px;
    margin-right: 0;
  }
}

.seminar .seminar-contents .seminar-content:nth-child(2n+1) .index{
  background-color: rgba(0, 0, 0, 0.5);
  color: #fff;
}


.seminar .seminar-contents .seminar-content:nth-child(2n+1) .content{
  background-color: rgba(0, 0, 0, 0.5);
  color: #fff;
}

.seminar .seminar-contents .seminar-content:nth-child(2n) .index, .seminar .seminar-contents .seminar-content:nth-child(2n) .content{
  background-color: rgba(0, 0, 0, 0.3);
  color: #FFFFFF;
}

.seminar .seminar-contents .seminar-content .index{
  margin-right: 4px;
}

.image{
  margin: 15px 40px;
  margin-top: 100px;
}

.image input#MORE{
  display: none;
}

.image .image-logo{
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  color: #4A4A4A;
  letter-spacing: 0.5rem;
  font-weight: 700;
  font-size: 24px;
}


.image .image-contents{
  border-top: 2px solid #4A4A4A;
  overflow: hidden;
  font-family: 'ヒラギノ角ゴシック','Hiragino Sans',sans-serif;
  color: #4A4A4A;
}

.image .image-content{
  letter-spacing: 0.3rem;
  padding: 30px 50px;
}


.image .image-content .content{
  padding: 30px 50px;
}

.image .image-content .main{
  font-size: 22px;
  font-weight: 700;
}

.image .image-content .sub{
  font-size: 16px;
  padding-top: 20px;
}

.image .image-contents .image-content:nth-child(2n+1){
  background-color: #FAFAFA;
}

.image-content .thumbnail{
  width: 190px;
  margin-right: 20px;
  max-width: 300px;
}

.image-content .thumbnail .embed-responsive .embed-responsive-item{
  background-size: cover;
  border-radius: 4px;
  background-position: center; 
}

.image label{
  border: 2px solid #4A4A4A;
  color: #4A4A4A;
  display: inline-block;
  background: white;
  border-radius: 0.8rem;
  font-size: 0.8rem;
  padding: 0.1rem 2.4rem;
  letter-spacing: 0.3rem;
  cursor: pointer;
  margin-top: 10px;
}

.image .image-contents .image-content:nth-child(n+3){
  display: none;
}

.image input[type=checkbox]:checked ~ .image-contents .image-content:nth-child(n+3){
  display:flex!important;
}

.image input[type=checkbox]:checked + .labelmore label{
  display: none;
}

.image input#MORE2{
  display: none;
}


.image .labelmore{
  text-align: center;
  position: relative;
}

.footer{
  text-align: center;
  background-color: #0f1932;
  color: #D6D6D6;
  padding: 12px;
  font-size: 12px;
}

@media (max-width: 1400px){
  .image .image-content .content {
  padding: 30px 20px;
  }
}

@media (max-width: 550px){
  .image .image-content .main {
    font-size: 20px!important;
  }
  .image .image-content {
    padding: 30px 20px;
  }
}

@media (max-width: 450px){
  .image .image-content .main {
    font-size: 16px!important;
  }
  .image .image-content .sub{
    font-size: 12px;
  }
  .image .image-content {
    padding: 30px 20px;
  }
}