#five_button {
    position: relative;
    width: 100%;
    text-align: center;
}

#button_first {
    display: inline-block;
    position: relative;
    margin-left: auto;
    margin-right: auto;
    cursor: pointer;
}

#button_prev {
    display: inline-block;
    position: relative;
    cursor: pointer;
}

#button_middle {
    display: inline-block;
    position: relative;
    cursor: pointer;
}

#button_next {
    display: inline-block;
    position: relative;
    cursor: pointer;
}

#button_last {
    display: inline-block;
    position: relative;
    cursor: pointer;
}
body {
    color: #ffffff;
    background-color: #000000;
    font-family: 'Arial','Helvetica','メイリオ', Meiryo,'Hiragino Sans','ヒラギノ角ゴシック',YuGothic,'Yu Gothic','ＭＳ Ｐゴシック','MS PGothic',sans-serif;
    margin: 0;
}

#Slice {
    display: inline-block;
    position: relative;
    width: auto;
    height: 300px;
    margin: 20px auto;
}

.js-slider {
    position: relative;
    width: 300px;
    height: 20px;
    margin: 20px auto;
}

    .js-slider div {
        background: #ddd;
        height: 3px;
        border: 1px inset #aaa;
        position: relative;
        top: 12px;
        font-size: 0px;
    }

    .js-slider input {
        display: block;
        position: absolute;
        width: 15px;
        height: 20px;
        cursor: pointer;
    }

#stage {
    display: block;
    position: relative;
    margin-left: auto;
    margin-right: auto;
}

#stage_prev {
    position: relative;
    cursor: pointer;
}

#stage_next {
    position: relative;
    cursor: pointer;
}

iframe {
    border: none;
    width: 100%;
    height: 75px;
}