.brand{
    width: 2.2em;
}

.introduction{
    text-align: center;
}

.shoseki, .intro{
    height: 200px;
    margin: 0.5em;
}

.group{
    margin-top: 2.0em;
}

cite{
    color: #a5a5a5;
    font-size: smaller;
}

footer{
    color: rgb(51, 51, 51);
    margin-top: 2.0em;
    height: 6.0em;
    display: flex;
    justify-content: center;
	align-items: center;
}

@media screen and (max-width:570px) { 
    /*　画面サイズが570pxからはここを読み込む　*/
    h1{
        font-size: 2.0em;
    }
    .intro{
        max-width: 100%;
        height: auto;
    }
}


/* to-page-top */
#to-page-top {
    position: fixed;
    bottom: 50px;
    right: 20px;  
    font-size: 80%;
}
#to-page-top a {
    background: rgba(93, 116, 152, 0.803);
    text-decoration: none;
    color: #fff;
    padding: 10px 15px;
    text-align: center;
    display: block;
    border-radius: 10px;
}
#to-page-top a:hover {
    text-decoration: none;
    background: rgba(0, 60, 151, 0.803);
}