.arc-timer{position:relative;width:120px;height:120px;margin:auto}.arc-timer span{display:block;text-align:center;color:#fff;width:inherit;height:inherit;line-height:116px;position:absolute;padding-left:3px;top:0}.arc-timer span sup{font-size:.65em}.arc-timer.backdrop{-webkit-transition:opacity .35s;transition:opacity .35s;opacity:0;position:fixed;top:0;left:0;bottom:0;right:0;width:100%;height:100%;z-index:9999;background:rgba(0,0,0,.25)}.arc-timer.visible{visibility:visible;opacity:1}.arc-timer .arc-timer-canvas{margin:auto;position:absolute;top:0;left:0;right:0;bottom:0}.arc-timer canvas{border-radius:50%;background:#000;padding:2px}