@media only screen and (max-width: 640px) {

    .song {
        width: 100%;
        float: none;
    }

    ul#product_extranavi{
        padding-top: 10px;
    }
    #sp_detail_menu.stickynavi ~ ul#product_extranavi{
        padding-top: 50px;
    }
    ul.product_subnavi{
        padding-top: 50px;
    }
    ul#product_extranavi+ul.product_subnavi{
        padding-top: 10px;
    }
    ul.product_subnavi li{
        display: block;
    }

    ul#tab_navi.guideline,
    ul#product_mainnavi.guideline{
        height: auto;
        top: 0;
    }

    ul#product_langnavi{
        margin-top: 10px;
        margin-bottom: 0;
    }


    #category_main .aboutvocaloid h4 {
        margin-left: 0;
    }


    #category_main .aboutvocaloid h4 img{
        height: 25px;
        width: auto;
    }
    .aboutvocaloid p.link{
        position: relative;
        top: -5px;
        left: 0;
        margin-bottom: 0;
    }




}