how can i limit css animation?

.newsletter-section {
  position: relative;
}

#confettis {
  overflow: hidden;
  position: absolute;
  height: 100%;
  width: 100%;
}

.confetti {
  width: 15px;
  height: 15px;
  background-color: #f2d74e;
  position: absolute;
  left: 50%;
  animation: confetti 5s ease-in-out -2s infinite;
  transform-origin: left top;
}

.confetti:nth-child(1) {
  background-color: #f2d74e;
  left: 10%;
  animation-delay: 0;
}

.confetti:nth-child(2) {
  background-color: #95c3de;
  left: 20%;
  animation-delay: -5s;
}

.confetti:nth-child(3) {
  background-color: #ff9a91;
  left: 30%;
  animation-delay: -3s;
}

.confetti:nth-child(4) {
  background-color: #f2d74e;
  left: 40%;
  animation-delay: -2.5s;
}

.confetti:nth-child(5) {
  background-color: #95c3de;
  left: 50%;
  animation-delay: -4s;
}

.confetti:nth-child(6) {
  background-color: #ff9a91;
  left: 60%;
  animation-delay: -6s;
}

.confetti:nth-child(7) {
  background-color: #f2d74e;
  left: 70%;
  animation-delay: -1.5s;
}

.confetti:nth-child(8) {
  background-color: #95c3de;
  left: 80%;
  animation-delay: -2s;
}

.confetti:nth-child(9) {
  background-color: #ff9a91;
  left: 90%;
  animation-delay: -3.5s;
}

.confetti:nth-child(10) {
  background-color: #f2d74e;
  left: 100%;
  animation-delay: -2.5s;
}

@keyframes confetti {
  0% {
    transform: rotateZ(15deg) rotateY(0deg) translate(0, 0);
  }
  25% {
    transform: rotateZ(5deg) rotateY(360deg) translate(-5vw, 20vh);
  }
  50% {
    transform: rotateZ(15deg) rotateY(720deg) translate(5vw, 60vh);
  }
  75% {
    transform: rotateZ(5deg) rotateY(1080deg) translate(-10vw, 80vh);
  }
  100% {
    transform: rotateZ(15deg) rotateY(1440deg) translate(10vw, 110vh);
  }
}

<div class="newsletter-section">
  <div class="page-width">
    <div id="confettis">
      <div class="confetti"></div>
      <div class="confetti"></div>
      <div class="confetti"></div>
      <div class="confetti"></div>
      <div class="confetti"></div>
      <div class="confetti"></div>
      <div class="confetti"></div>
      <div class="confetti"></div>
      <div class="confetti"></div>
    </div>
    <div class="section-header text-center">
      <h2 class="h2">My Title</h2>
      <div class="rte">Lorem Ipsum Dolor Site Amet</div>
    </div>
  </div>
</div>
<footer>
  <p>Some content</p>
</footer>