canvas {
  position: absolute;
  left:0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,.2);
}

#love-letter {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  width: min(90%, 720px);
  text-align: center;
  pointer-events: none;

  font-family: "Segoe Script", "Brush Script MT", cursive, sans-serif;
  font-size: clamp(18px, 3.2vw, 30px);
  line-height: 1.7;
  color: #ffd6e8;
  white-space: pre-line;            /* honor the line breaks we type in */
  text-shadow:
    0 0 6px rgba(255, 100, 160, 0.9),
    0 0 18px rgba(255, 60, 130, 0.6),
    0 0 36px rgba(255, 40, 110, 0.4);
  opacity: 0;
  animation: letter-fade-in 2s ease forwards;
}

@keyframes letter-fade-in {
  to { opacity: 1; }
}

#caret {
  display: inline-block;
  margin-left: 2px;
  font-weight: 300;
  color: #ff7eb3;
  animation: caret-blink 0.9s steps(1) infinite;
}

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