body{
  background: #FFFFFF;

}

* {
  box-sizing: border-box;
}

img {
  max-width: 100%;
  vertical-align: top;
  
}

.gallery {
  display: flex;
  margin: 10px 0%;
  max-width: 800px;
  position: relative;
  padding-top: 66.6666666667%;

}
@media screen and (min-width: 600px) {
  .gallery {
    padding-top: 530px;
  }
}
.gallery__img {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
}
.gallery__thumb {
  padding-top: 6px;
  margin: 6px;
  display: block;
}
.gallery__selector {
  position: absolute;
  opacity: 0;
  visibility: hidden;
}
.gallery__selector:checked + .gallery__img {
  opacity: 1;
}
.gallery__selector:checked ~ .gallery__thumb > img {
  box-shadow: 0 0 0 3px #FFFFFF;
}

ol{
width: 840px;
  margin: 0 auto 0px;
  margin-left: 180px;
}

p{
  font-size: 10pt;
   margin-left: 0%;
    margin-right: auto;
}

h2{
  font-size: 12pt;

}



.video {
position: relative;
height: 0;
padding: 30px 0 56.25%;
overflow: hidden;

}

.video iframe {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;

}

h1 {font-weight: lighter;
  font-size:  20pt;
  position: fixed;
}

.menu-btn {
    position: fixed;
    top: 10px;
    right: 10px;
    display: flex;
    height: 60px;
    width: 60px;
    justify-content: center;
    align-items: center;
    z-index: 90;
    background-color: #00FF00;
}

.menu-btn span,
.menu-btn span:before,
.menu-btn span:after {
    content: '';
    display: block;
    height: 3px;
    width: 25px;
    border-radius: 3px;
    background-color: #000000;
    position: absolute;
}
.menu-btn span:before {
    bottom: 8px;
}
.menu-btn span:after {
    top: 8px;
}

#menu-btn-check:checked ~ .menu-btn span {
    background-color: rgba(255, 255, 255, 0);/*メニューオープン時は真ん中の線を透明にする*/
}
#menu-btn-check:checked ~ .menu-btn span::before {
    bottom: 0;
    transform: rotate(45deg);
}
#menu-btn-check:checked ~ .menu-btn span::after {
    top: 0;
    transform: rotate(-45deg);
}

#menu-btn-check {
    display: none;
}
.menu-content {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 80;
    background-color: #AAAAAA;
}
.menu-content ul {
    padding: 70px 10px 0;

  
}
.menu-content ul li {
    border-bottom: solid 1px rgba(0, 0, 0, 0);
    list-style: none;
      background-color: #FFFFFF;
    width: 100px; margin-left: 0px
  margin: 1% auto 0px;
     
   

   
}
.menu-content ul li a {
    display: block;
    width: 100%;
    font-size: 15px;
    box-sizing: border-box;
    color:#00FF00;
    text-decoration: none;
    padding: 9px 15px 10px 0;
    position: relative;
}
.menu-content ul li a::before {
    content: "";
    width: 7px;
    height: 7px;
    border-top: solid 2px #ffffff;
    border-right: solid 2px #ffffff;
    transform: rotate(45deg);
    position: absolute;
    right: 11px;
    top: 16px;
}

.menu-content {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 30px;
    left: 100%;/*leftの値を変更してメニューを画面外へ*/
    z-index: 80;
    background-color: rgba(0, 0, 0, 0);
    transition: all 0.5s;/*アニメーション設定*/
}

#menu-btn-check:checked ~ .menu-content {
    left: 0;/*メニューを画面内へ*/

}