:root{--ptpian-control-txt-color:#ffffff;--ptpian-txt-piano-color:#ffffff;--ptpian-mark-bg-color:#000000;--ptpian-mark-text-color:#ffffff;--ptpian-theme-bg:url(../theme/default-theme.png)}.control span{color:var(--ptpian-control-txt-color)}.piano-keys .key span{color:var(--ptpian-txt-piano-color)}.mark{background-color:var(--ptpian-mark-bg-color);color:var(--ptpian-mark-text-color)}.columnboxpiano{background-image:var(--ptpian-theme-bg);background-repeat:repeat}.hidden{display:none!important}