.signature-box { width: 100%; height: 100%; position: fixed; z-index: 11111; left: 0; right: 0; bottom: 0; }
.signature-box .pop-mask-box { width: 100%; height: 100%; background: #111; opacity: 0.6; z-index: 111; }
.signature-box .pop-content-box { position: absolute; top: 0; width: 100%; background: #fff; height: 100%; border-radius: 0rem 0rem 0 0; z-index: 112; }