* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: background-color 0.5s ease;
}

body.not-exploded {
  background-color: #ff4d4d;
}

body.exploded {
  background-color: #4dff88;
}

#indicator {
  font-size: 10rem;
  font-weight: 900;
  color: white;
  text-shadow: 0 0 20px rgba(0,0,0,0.3);
  margin-bottom: 1rem;
  text-align: center;
}

#countdown {
  font-size: 2rem;
  font-weight: 600;
  color: white;
  text-align: center;
  text-shadow: 0 0 10px rgba(0,0,0,0.2);
}

p:first-of-type {
  font-size: 1.5rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 0.5rem;
}