* {
  padding: 0;
  margin: 0;
}
body {
  background-color: #fee2c5;
}

.container {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.ball {
  width: 30px;
  height: 30px;
  margin: 5px;
  border-radius: 50px;
  background-color: black;
}

.ball:nth-child(1) {
  background-color: #ff0000;
  animation: right 1s infinite ease-in-out;
}
.ball:nth-child(2) {
  background-color: #ff8d29;
  animation: left 1s infinite ease-in-out;
}
.ball:nth-child(3) {
  background-color: #f7d716;
  animation: right 1s infinite ease-in-out;
}
.ball:nth-child(4) {
  background-color: #3e7c17;
  animation: left 1s infinite ease-in-out;
}
.ball:nth-child(5) {
  background-color: #0e3eda;
  animation: right 1s infinite ease-in-out;
}
.ball:nth-child(6) {
  background-color: #5534a5;
  animation: left 1s infinite ease-in-out;
}

@keyframes right {
  0% {
    transform: translate(-15px);
  }
  50% {
    transform: translate(15px);
  }
  100% {
    transform: translate(-15px);
  }
}
@keyframes left {
  0% {
    transform: translate(15px);
  }
  50% {
    transform: translate(-15px);
  }
  100% {
    transform: translate(15px);
  }
}