#preview.viewport{position:relative;padding-top:12px}#preview .imageBuffer{position:absolute;top:0;left:0}#preview .drawingBuffer{position:absolute;left:0}#preview_sp.viewport{width:320px;height:240px}#preview_sp.viewport video{float:left;width:320px;height:240px}#preview_sp.viewport canvas{float:left;width:320px;height:240px}#preview_sp.viewport canvas.drawingBuffer{margin-left:-320px}#preview_sp.viewport video.drawingBuffer{margin-left:-320px}