docs update

docs/lab/css/artplayer.css

@@ -2,7 +2,7 @@
 .artplayer-video-player{position:relative;width:100%;height:100%;overflow:hidden;outline:0;font-family:Roboto,Arial,Helvetica,sans-serif;color:#eee;text-align:left;direction:ltr;font-size:14px;line-height:1.3;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;-webkit-tap-highlight-color:rgba(0,0,0,0);touch-action:manipulation;-ms-high-contrast-adjust:none}.artplayer-video-player *{box-sizing:border-box}.artplayer-video-player .art-icon{display:inline-block;line-height:1.5}.artplayer-video-player .art-icon svg{fill:#fff}
 .artplayer-video-player .artplayer-video{position:absolute;z-index:10;left:0;top:0;right:0;bottom:0;width:100%;height:100%;background-color:#000;outline:0;cursor:pointer}
 .artplayer-video-player .artplayer-layers{position:absolute;z-index:30;left:0;top:0;right:0;bottom:0;width:100%;height:100%;pointer-events:none}.artplayer-video-player .artplayer-layers .art-layer{pointer-events:all}
-.artplayer-video-player .artplayer-mask{display:none;position:absolute;z-index:40;left:0;top:0;right:0;bottom:0;width:100%;height:100%;pointer-events:none}.artplayer-video-player .artplayer-mask .art-icon-playBig{position:absolute;right:30px;bottom:65px;opacity:.6}
+.artplayer-video-player .artplayer-mask{display:none;position:absolute;z-index:40;left:0;top:0;right:0;bottom:0;width:100%;height:100%;pointer-events:none}.artplayer-video-player .artplayer-mask .art-playBig{position:absolute;right:30px;bottom:65px;opacity:.6}
 .artplayer-video-player .artplayer-loading{display:none;position:absolute;z-index:60;left:0;top:0;right:0;bottom:0;width:100%;height:100%;align-items:center;justify-content:center;pointer-events:none}
 .artplayer-video-player .artplayer-notice{display:none;font-size:14px;position:absolute;z-index:70;left:0;top:0;padding:10px;width:100%;pointer-events:none}.artplayer-video-player .artplayer-notice .artplayer-notice-inner{display:inline-block;padding:5px 10px;color:#fff;background:rgba(0,0,0,.6);border-radius:3px}
 .artplayer-video-player .artplayer-bottom{position:absolute;z-index:50;left:0;right:0;bottom:0;height:100px;padding:60px 10px 0;opacity:0;visibility:hidden;transition:all .2s ease-in-out;pointer-events:none;background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAADGCAYAAAAT+OqFAAAAdklEQVQoz42QQQ7AIAgEF/T/D+kbq/RWAlnQyyazA4aoAB4FsBSA/bFjuF1EOL7VbrIrBuusmrt4ZZORfb6ehbWdnRHEIiITaEUKa5EJqUakRSaEYBJSCY2dEstQY7AuxahwXFrvZmWl2rh4JZ07z9dLtesfNj5q0FU3A5ObbwAAAABJRU5ErkJggg==) repeat-x bottom}.artplayer-video-player .artplayer-bottom .artplayer-progress{position:relative;pointer-events:all}.artplayer-video-player .artplayer-bottom .artplayer-progress .art-control-progress{position:relative;height:5px;padding:1px 0;cursor:pointer}.artplayer-video-player .artplayer-bottom .artplayer-progress .art-control-progress .art-control-progress-inner{position:relative;height:100%;background:hsla(0,0%,100%,.2)}.artplayer-video-player .artplayer-bottom .artplayer-progress .art-control-progress .art-control-progress-inner .art-progress-loaded{position:absolute;z-index:10;left:0;top:0;right:0;bottom:0;height:100%;width:0;background:hsla(0,0%,100%,.4)}.artplayer-video-player .artplayer-bottom .artplayer-progress .art-control-progress .art-control-progress-inner .art-progress-played{position:absolute;z-index:20;left:0;top:0;right:0;bottom:0;height:100%;width:0}.artplayer-video-player .artplayer-bottom .artplayer-progress .art-control-progress .art-control-progress-inner .art-progress-highlight{position:absolute;z-index:30;left:0;top:0;right:0;bottom:0;height:0}.artplayer-video-player .artplayer-bottom .artplayer-progress .art-control-progress .art-control-progress-inner .art-progress-highlight span{display:inline-block;position:absolute;left:0;top:0;width:7px;height:3px;background:#fff;border-radius:3px}.artplayer-video-player .artplayer-bottom .artplayer-progress .art-control-progress .art-control-progress-inner .art-progress-indicator{display:none;position:absolute;z-index:40;top:-5px;left:-6.5px;width:13px;height:13px;border-radius:50%}.artplayer-video-player .artplayer-bottom .artplayer-progress .art-control-progress .art-control-progress-inner .art-progress-indicator.art-show-indicator{display:block}.artplayer-video-player .artplayer-bottom .artplayer-progress .art-control-progress .art-control-progress-inner .art-progress-tip{display:none;position:absolute;z-index:50;top:-25px;left:0;height:20px;padding:0 5px;line-height:20px;color:#fff;font-size:12px;text-align:center;background:rgba(0,0,0,.7);border-radius:3px;font-weight:700}.artplayer-video-player .artplayer-bottom .artplayer-progress .art-control-progress:hover .art-progress-indicator,.artplayer-video-player .artplayer-bottom .artplayer-progress .art-control-progress:hover .art-progress-tip{display:block}.artplayer-video-player .artplayer-bottom .artplayer-progress .art-control-thumbnails{display:none;position:absolute;bottom:8px;left:0;pointer-events:none;background-color:rgba(0,0,0,.7)}.artplayer-video-player .artplayer-bottom .artplayer-controls{position:relative;pointer-events:all;display:flex;align-items:center;justify-content:space-between;height:36px}.artplayer-video-player .artplayer-bottom .artplayer-controls .artplayer-controls-left,.artplayer-video-player .artplayer-bottom .artplayer-controls .artplayer-controls-right{display:flex}.artplayer-video-player .artplayer-bottom .artplayer-controls .art-control{opacity:.9;font-size:12px;height:36px;line-height:36px;cursor:pointer}.artplayer-video-player .artplayer-bottom .artplayer-controls .art-control .art-icon{display:flex;align-items:center;justify-content:center;float:left;height:36px;width:36px}.artplayer-video-player .artplayer-bottom .artplayer-controls .art-control:hover{opacity:1}.artplayer-video-player .artplayer-bottom .artplayer-controls .art-control-volume .art-volume-panel{position:relative;float:left;width:0;height:100%;transition:margin .2s cubic-bezier(.4,0,1,1),width .2s cubic-bezier(.4,0,1,1);overflow:hidden}.artplayer-video-player .artplayer-bottom .artplayer-controls .art-control-volume .art-volume-panel .art-volume-slider-handle{position:absolute;top:50%;left:0;width:12px;height:12px;border-radius:12px;margin-top:-6px;background:#fff}.artplayer-video-player .artplayer-bottom .artplayer-controls .art-control-volume .art-volume-panel .art-volume-slider-handle:before{left:-54px;background:#fff}.artplayer-video-player .artplayer-bottom .artplayer-controls .art-control-volume .art-volume-panel .art-volume-slider-handle:after{left:6px;background:hsla(0,0%,100%,.2)}.artplayer-video-player .artplayer-bottom .artplayer-controls .art-control-volume .art-volume-panel .art-volume-slider-handle:after,.artplayer-video-player .artplayer-bottom .artplayer-controls .art-control-volume .art-volume-panel .art-volume-slider-handle:before{content:"";position:absolute;display:block;top:50%;height:3px;margin-top:-2px;width:60px}.artplayer-video-player .artplayer-bottom .artplayer-controls .art-control-volume:Line truncated