@charset "utf-8";
/* CSS Document */

@media screen and (max-width : 768px){
body,
#top_image {
    height: auto;
}

#container {
    padding-top: 60px;
    flex-wrap: wrap;
}

#contents {
    padding-left: 0;
    }

#top_image,
#banner {
    flex-direction: column;
}

nav {
    top: 0;
    width: 100%;
    height: 60px;
    }

nav a:first-child {
    top: 0;
    width: 60px;
    left: 5px;
}

#slide-starter {
    left: auto;
    right: 5px;
}

#slide-starter b {
    display: none;
}

#side_contents {
    width: 100vw;
    height: 100%;
    top: 0;
    bottom: 0;
    left: -100vw;
    padding: 60px 30px 0;
}

#side_contents li a {
    padding: 10px 15px;
}

#side_contents ul {
    width: 100%;
}

#side_contents ul:first-child {
    margin-top: 0;
    margin-bottom: auto;
}

#side_contents ul:nth-child(2) {
    display: flex;
}

#side_contents ul:nth-child(2) li a {
    padding: 5px;
}

footer {
    position: relative;
}

#tab-1:checked + #side_contents {
    left: 0;
}

#return_top {
    width: 100%;
    position: relative;
}

}