body{
    font-size: 16px;
    color: black;
}
a{
    text-decoration: none;
}
strong{
    color: red;
    font-weight: bold;
}
em{
    font-style: normal;
    font-weight: bolder;
    
}
cite{
    color: green;
}
.mycite{
    font-style: normal;
    color: black;
}

/*  */
#body{
    max-width: 960px;
    min-height: 500px;
    margin: 0 auto;
    padding: 0;
}
.body__BackGround{
    position: relative;
    z-index: 1;
    min-height: 500px;
    background-repeat: repeat;
    background-image: url(../image/BackGround.jpg);
    margin: 0 0 0 50px;
    padding: 0;
    box-shadow: 2px 2px 10px 0 rgba(0,0,0,0.4);
}
.nav{
    position: fixed;
    margin: 0;
    padding: 0;
	display: flex;
    flex-flow: column nowrap;
    list-style: none;
}
.nav__item{
    border-radius: 10px 0 0 10px;
    width: 50px;
    margin: 5px 0;
    padding: 0;
    font-size: 30px;
    background-color: white;
    box-shadow: 2px 2px 10px 0 rgba(0,0,0,0.4);
    writing-mode: vertical-rl;
}
.nav__item__content{
    border-radius: 7px 0 0 7px;
    display: block;
    margin: 5px 0 5px 5px;
    padding: 2px 10px 2px 2px;
    width: 30px;
    line-height: 100%;
    border: solid 2px red;
    border-right: none;
    color: black;
}
.nav__title{
    border-radius: 7px 0 0 7px;
    display: block;
    margin: 5px 0 5px 5px;
    padding: 2px 10px 2px 2px;
    width: 30px;
    line-height: 100%;
    border: solid 2px red;
    border-right: none;
    color: black;
}
.section{
    padding: 1em;
}
.section__title{
    margin: 0;
    padding: 0;
    font-size: 1.8em;
    border-bottom: solid 1px gray;
}
.section__subtitle{
    margin: 0;
    padding: 0;
    font-size: 1.5em;
    border-bottom: dashed 1px gray;
}
.section__paragraph{
    margin: 0;
    padding: 0.5em;
    line-height: 1.8em;
    text-indent: 1em;
}
.footer{
    padding: 1em;
}
/* 各独立要素 */
.copyright{
    color: dimgray;
}
.ImageBox{
    width: 1px;
    display: table;
    margin: 0.6em;
    padding: 0.6em;
    border: 1px solid #bbb;
    background-color: white;
    box-shadow: 2px 2px 10px 0 rgba(0,0,0,0.2);
}
.ImageBox__title{
    margin: 0.3em 0;
    padding: 0;
    font-size: 1.5em;
    border-bottom: dotted 1px gray;
}
.ImageBox__comment{
    margin: 0;
    padding: 0;
}
.ImageBox__image{
    border: solid 1px #aaa;
}

/* 左右 */
.left{
    float: left;
}
.right{
    float: right;
}
/* 大きさ */
.image--small{
    width: 200px;
}
.image--smaller{
    width: 300px;
}
.image--middle{
    width: 400px;
}
.image--larger{
    width: 500px;
}
.image--large{
    width: 600px;
}