body{display:flex;overflow:hidden;margin:0;justify-content:center;align-items:center;height:100vh}button{border:none;color:#fff;padding:15px 32px;text-align:center;text-decoration:none;display:inline-block;font-size:16px}video{border:5px solid black}.container{text-align:center}#start_calibration{position:relative;cursor:pointer}#inference{cursor:pointer;background-color:green}#overlayText{color:#000;font-size:24px;font-weight:700;text-shadow:2px 2px 4px rgba(0,0,0,.5)}#data_points,#inference_canvas{background-color:#000}#score{height:300px;width:645px;justify-content:center;align-items:center;border:2px solid black;display:none}h1{color:#000;display:block}#inference{display:block}