.container-firework {
  display: none;
  text-align: center;
  position: relative;
  width: 100vw;
  height: 100vh;
}

.firework {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #fff;
}

.firework:nth-child(1) {
  top: 30%;
  left: 20%;
  animation: explode1 2s infinite;
}

.firework:nth-child(2) {
  top: 40%;
  right: 20%;
  animation: explode2 2.5s infinite 0.3s;
}

.firework:nth-child(3) {
  top: 20%;
  left: 50%;
  animation: explode3 2.2s infinite 0.5s;
}

.firework:nth-child(4) {
  top: 60%;
  left: 30%;
  animation: explode4 2.7s infinite 0.7s;
}

.firework:nth-child(5) {
  top: 25%;
  right: 35%;
  animation: explode5 2.3s infinite 0.2s;
}

.firework:nth-child(6) {
  top: 45%;
  left: 40%;
  animation: explode6 2.6s infinite 0.4s;
}

.firework:nth-child(7) {
  top: 35%;
  right: 45%;
  animation: explode7 2.4s infinite 0.6s;
}

.firework:nth-child(8) {
  top: 55%;
  left: 25%;
  animation: explode8 2.8s infinite 0.8s;
}

@keyframes fadeInOut {
  0%,
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.5);
  }
  50% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

@keyframes explode1 {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
  50% {
    transform: scale(20);
    box-shadow: 0 0 20px 10px #ffff9f;
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
}

@keyframes explode2 {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
  50% {
    transform: scale(20);
    box-shadow: 0 0 20px 10px #365194;
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
}

@keyframes explode3 {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
  50% {
    transform: scale(20);
    box-shadow: 0 0 20px 10px #483d8b;
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
}

@keyframes explode4 {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
  50% {
    transform: scale(20);
    box-shadow: 0 0 20px 10px #93ccea;
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
}

@keyframes explode5 {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
  50% {
    transform: scale(20);
    box-shadow: 0 0 20px 10px #ffff33;
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
}

@keyframes explode6 {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
  50% {
    transform: scale(20);
    box-shadow: 0 0 20px 10px #33ffff;
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
}

@keyframes explode7 {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
  50% {
    transform: scale(20);
    box-shadow: 0 0 20px 10px #ff9933;
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
}

@keyframes explode8 {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
  50% {
    transform: scale(20);
    box-shadow: 0 0 20px 10px #9933ff;
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 #fff;
  }
}