* {
  padding: 0;
  margin: 0;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}
.glass {
  backdrop-filter: blur(20px);
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

/* for record animation */
.listening-glow {
  box-shadow: 0 0 15px 4px rgba(0, 255, 200, 0.7);
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(0, 255, 200, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(0, 255, 200, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(0, 255, 200, 0);
  }
}