#prtsc-overlay-blocker {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  color: #fff;
  display: none;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  z-index: 2147483647; /* sit on top of everything */
}
#prtsc-overlay-blocker.prtsc-overlay-visible { display: flex; }

#prtsc-overlay-blocker .prtsc-overlay-content {
  max-width: 780px;
  width: 100%;
  line-height: 1.45;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}
#prtsc-overlay-blocker .prtsc-overlay-content strong {
  display: block;
  font-size: 28px;
  margin-bottom: 10px;
}
#prtsc-overlay-blocker .prtsc-overlay-sub {
  display: block;
  opacity: 0.85;
  font-size: 16px;
}