* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  background: #0f0903;
  color: #fff;
  font-family: Arial, Helvetica, sans-serif;
}

.landing {
  width: min(100vw, 720px);
  margin: 0 auto;
  overflow: hidden;
  background: #120903;
}

.panel {
  position: relative;
  width: 100%;
}

.panel-image {
  display: block;
  width: 100%;
  height: auto;
  user-select: none;
}

.download-button {
  position: absolute;
  bottom: 44px;
  left: 50%;
  z-index: 2;
  display: block;
  width: 50%;
  transform: translateX(-50%);
  transform-origin: center;
  animation: scalePulse 1.6s ease-in-out infinite;
  -webkit-tap-highlight-color: transparent;
}

.download-button img {
  display: block;
  width: 100%;
  height: auto;
}

@keyframes scalePulse {
  0%,
  100% {
    transform: translateX(-50%) scale(1);
  }

  50% {
    transform: translateX(-50%) scale(1.2);
  }
}

@media (max-width: 420px) {
  .download-button {
    bottom: 22px;
  }
}