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

body {
  width: 100%;
  height: 100vh;
  background-color: #fee2c5;
  display: flex;
  align-items: center;
}

.container {
  width: 100%;
  display: flex;
  justify-content: center;
}

.circle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  margin: 0 2rem;
}

.circle:nth-child(1) {
  background-color: rgb(14, 62, 218);
  animation: pulse-blue 2s infinite;
}
.circle:nth-child(2) {
  background-color: rgb(249, 217, 35);
  animation: pulse-yellow 2s infinite;
}
.circle:nth-child(3) {
  background-color: rgb(243, 36, 36);
  animation: pulse-red 2s infinite;
}

@keyframes pulse-red {
  0% {
    transform: scale(0.9);
    box-shadow: 0 0 0 0 rgba(255, 82, 82, 0.7);
  }

  70% {
    transform: scale(1);
    box-shadow: 0 0 0 10px rgba(255, 82, 82, 0);
  }

  100% {
    transform: scale(0.9);
    box-shadow: 0 0 0 0 rgba(255, 82, 82, 0);
  }
}

@keyframes pulse-yellow {
  0% {
    transform: scale(0.9);
    box-shadow: 0 0 0 0 rgb(249, 217, 35, 0.7);
  }

  70% {
    transform: scale(1);
    box-shadow: 0 0 0 10px rgba(255, 82, 82, 0);
  }

  100% {
    transform: scale(0.9);
    box-shadow: 0 0 0 0 rgba(255, 82, 82, 0);
  }
}
@keyframes pulse-blue {
  0% {
    transform: scale(0.9);
    box-shadow: 0 0 0 0 rgb(14, 62, 218, 0.7);
  }

  70% {
    transform: scale(1);
    box-shadow: 0 0 0 10px rgba(255, 82, 82, 0);
  }

  100% {
    transform: scale(0.9);
    box-shadow: 0 0 0 0 rgba(255, 82, 82, 0);
  }
}