.margin {
  margin: 0px;
  padding: 0px;
}

body {
  box-sizing: border-box;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgb(29, 27, 27);
}

.line {
  position: absolute;
  transform-origin: top;
  animation: boom1 4s ease-in-out infinite;
  width: 0.3rem;
  height: 0;
  background-color: yellow;
}

.line:nth-child(1) {
  transform: translateY(20px);
}

.line:nth-child(2) {
  transform: rotate(30deg) translateY(20px);
}

.line:nth-child(3) {
  transform: rotateZ(60deg) translateY(20px);
}

.line:nth-child(4) {
  transform: rotateZ(90deg) translateY(20px);
}

.line:nth-child(5) {
  transform: rotateZ(120deg) translateY(20px);
}

.line:nth-child(6) {
  transform: rotateZ(150deg) translateY(20px);
}

.line:nth-child(7) {
  transform: rotateZ(180deg) translateY(20px);
}

.line:nth-child(8) {
  transform: rotateZ(210deg) translateY(20px);
}

.line:nth-child(9) {
  transform: rotateZ(240deg) translateY(20px);
}

.line:nth-child(10) {
  transform: rotateZ(270deg) translateY(20px);
}

.line:nth-child(11) {
  transform: rotateZ(300deg) translateY(20px);
}

.line:nth-child(12) {
  transform: rotateZ(330deg) translateY(20px);
}

.firework1 {
  position: absolute;
  top: 50%;
  left: 50%;
}

.firework2 {
  position: absolute;
  top: 60vh;
  left: 70vw;
}

.firework2 span {
  position: absolute;
  transform-origin: top;
  animation: boom2 4s ease-in-out infinite;
  width: 0.2rem;
  height: 3rem;
  background-color: rgb(255, 0, 0);
}

.firework3 {
  position: absolute;
  top: 30vh;
  left: 30vw;
}

.firework3 span {
  position: absolute;
  transform-origin: top;
  animation: boom3 4s ease-in-out infinite;
  width: 0.2rem;
  height: 4rem;
  background-color: rgb(0, 0, 255);
}

.firework1 .line::before {
  content: "";
  position: absolute;
  transform-origin: top;
  inset: 0;
  scale: 1.5;
  transform: translateY(-2px);
  height: 1rem;
  background-color: rgb(29, 27, 27);
  animation: boomBlack1 4s ease-in-out infinite;
}

.firework2 .line::before {
  content: "";
  position: absolute;
  transform-origin: top;
  inset: 0;
  scale: 1.5;
  transform: translateY(-2px);
  height: 1rem;
  background-color: rgb(29, 27, 27);
  animation: boomBlack2 4s ease-in-out infinite;
}

.firework3 .line::before {
  content: "";
  position: absolute;
  inset: 0;
  scale: 1.5;
  transform: translateY(-2px);
  transform-origin: top;
  height: 1rem;
  background-color: rgb(29, 27, 27);
  animation: boomBlack3 4s ease-in-out infinite;
}

@keyframes boom1 {
  0% {
    height: 0rem;
  }
  25% {
    height: 6rem;
  }
  50% {
    height: 6rem;
  }
  100% {
    height: 6rem;
  }
}

@keyframes boom2 {
  0% {
    height: 0rem;
  }
  25% {
    height: 0rem;
  }
  50% {
    height: 3rem;
  }
  100% {
    height: 3rem;
  }
}

@keyframes boom3 {
  0% {
    height: 0rem;
  }
  25% {
    height: 0rem;
  }
  50% {
    height: 0rem;
  }
  85% {
    height: 4rem;
  }
  100% {
    height: 4rem;
  }
}

@keyframes boomBlack1 {
  0% {
    height: 0rem;
  }
  60% {
    height: 6rem;
  }
  100% {
    height: 6rem;
  }
}

@keyframes boomBlack2 {
  0% {
    height: 0rem;
  }
  25% {
    height: 0rem;
  }
  90% {
    height: 3rem;
  }
  100% {
    height: 3rem;
  }
}

@keyframes boomBlack3 {
  0% {
    height: 0rem;
  }

  60% {
    height: 0rem;
  }
  100% {
    height: 4rem;
  }
}