body {
    margin     : 0;
    padding    : 0;
    text-align : center;
    font       : 13px "メイリオ", "Meiryo", "Arvo", "Hiragino Kaku Gothic Pro", "ヒラギノ角ゴ Pro W3", sans-serif;
}
a.image_url img {
    border-style : none;
}
#display_image {
    margin-left  : auto;
    margin-right : auto;
}
#nav a {
    text-decoration  : none;
    text-align       : center;
    margin-top       : 2px;
    margin-left      : 3px;
    width            : 20px;
    height           : 20px;
    line-height      : 20px;
    color            : #999999;
    background-color : #999999;
    display          : inline-block;
    *display         : inline;
    *zoom            : 1;
}
#nav a.activeSlide {
    color            : #000;
    background-color : #000;
}
@media screen and (min-width: 960px) {
    #nav a:hover {
        opacity: 0.6;
        filter: alpha(opacity=60);
        -ms-filter: "alpha(opacity=60)";
        -moz-opacity: 0.6;
    }
}
#powered_by {
    font-size : 10px;
}