.custom-header {
  position: fixed;
  top: 0;
  width: 100%;
  background: transparent;
  z-index: 1000;
  padding: 16px;
  text-align: left;
  font-weight: bold;
  font-size: 1.5rem;
  border-bottom: none;
  font-family: monospace;
}

.cursor {
  display: inline-block;
  animation: blink 0.8s step-start infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}