html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ffd23f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.ep-wrap {
  position: relative;
  width: min(220px, 80vw);
  display: grid;
  place-items: center;
}

.ep-btn {
  position: relative;
  z-index: 1;
  border: 0;
  border-radius: 999px;
  padding: 12px 24px;
  background: #17141a;
  color: #fff7e6;
  font: 700 14px/1 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  cursor: pointer;
}

.ep-emoji {
  position: absolute;
  top: -8px;
  font-size: 22px;
  line-height: 1;
  opacity: 0;
  pointer-events: none;
}

.ep-emoji--1 {
  left: 10%;
}

.ep-emoji--2 {
  left: 44%;
}

.ep-emoji--3 {
  right: 10%;
}

@keyframes ep-pop {
  0% {
    transform: translateY(0) scale(0.4);
    opacity: 0;
  }
  30% {
    opacity: 1;
  }
  100% {
    transform: translateY(-64px) scale(1.1);
    opacity: 0;
  }
}
.ep-wrap.is-pop .ep-emoji,
.ep-wrap.is-demo .ep-emoji {
  animation: ep-pop 700ms cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

.ep-emoji--2 {
  animation-delay: 110ms;
}

.ep-emoji--3 {
  animation-delay: 220ms;
}

@media (prefers-reduced-motion: reduce) {
  .ep-wrap.is-pop .ep-emoji,
  .ep-wrap.is-demo .ep-emoji {
    animation: none !important;
    opacity: 0 !important;
  }
}