#countdown{position:absolute;top:40%;left:50%;height:40px;width:40px;text-align:center}#startButton,#stpButton{width:50%}#addVideo,#checkRecord{width:30%}#countdown-number{color:#003e80;display:inline-block;line-height:40px}#countdown>svg{position:absolute;top:0;right:0;width:40px;height:40px;transform:rotateY(-180deg) rotate(-90deg)}svg circle{stroke-dasharray:113px;stroke-dashoffset:0px;stroke-linecap:round;stroke-width:4px;stroke:#003e80;fill:none;animation:countdown 4s linear}#interactive{text-align:center}.display-none{display:none}@keyframes countdown{0%{stroke-dashoffset:0px}to{stroke-dashoffset:113px}}