@charset "utf-8";



ul.photo-gallery {
    width: 100%;
    display: flex;
}
ul.photo-gallery li {
    width: 50%;
    height: 900px;
}

.skymission {
    background-color: black;
    color: #fff;
}
.original {
    background-color: #fff;
    color: #000;
}
ul.photo-gallery li span {
    position: relative;
    z-index: 1;
    font-size: 3.4vw;
}
ul.photo-gallery li a {
    display: inline-block;
    width: 100%;
    height: 100%;
    color: inherit;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    font-size: 34px;
    position: relative;
}
ul.photo-gallery li.skymission a::before {
    content: "";
    display: block;
    width: 100%;
    height: 100%;
    background-image: url( ../img/photo_gallery/Exterior_5.jpg );
    background-size: cover;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    transition-duration: .6s;
}
ul.photo-gallery li.skymission a::after {
    content: "";
    display: block;
    width: 100%;
    height: 100%;
    background-color: #000000;
    opacity: .3;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: .7;
    transition-duration: .6s;
}
ul.photo-gallery li.skymission:hover a::before {
    opacity: 1;
}

ul.photo-gallery li.original a::before {
    content: "";
    display: block;
    width: 100%;
    height: 100%;
    background-image: url( ../img/photo_gallery/DSC_7875_A.jpg );
    background-size: cover;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0;
    transition-duration: .6s;
    background-position: 0% 60%;
}
ul.photo-gallery li.original a::after {
    content: "";
    display: block;
    width: 100%;
    height: 100%;
    background-color: #fff;
    opacity: .3;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: .4;
    transition-duration: .6s;
}
ul.photo-gallery li.original:hover a::before {
    opacity: 1;
}
.original a img {
    width: 19.6vw;
}
.photo-gallery img {
    z-index: 1;
    width: 50%;
    display: inline-block;
    margin: 0 auto;
}
.cover {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #000;
    opacity: .3;
}