body {
  margin: 0;
  padding: 0;
  background-color: #FF0000
  }

#container {
  width: 500px;
  height: 500px;
  padding-top: 80px;
  margin: 0 auto;
  }
  
.dot {
  width: 20px; 
  height:20px;
  margin: 30px auto;
  border-radius: 50px;
  }
  
.dot:nth-child(1) {
  background-color: #000000;
  animation: left 1s infinite ease-in-out;
  }
.dot:nth-child(2) {
  background-color: #1E90FF;
   animation: right 1.1s infinite ease-in-out;
}

.dot:nth-child(3) {
  background-color: #000000;
  animation: left 1s infinite ease-in-out;
  
  }
.dot:nth-child(4) {
  background-color: #1E90FF;
  animation: right 1.1s infinite ease-in-out;
  }
.dot:nth-child(5) {
  background-color: #000000;
  animation: left 1s infinite ease-in-out;
}

}
.dot:nth-child() {
  background-color: #1E90FF;
  animation: left 1s infinite ease-in-out;
}  
  @keyframes right {
   0% {transform: translate(-25px);}
   50% {transform: translate(25px);}
   100% {transform: translate(-25px);}
   }
 
  @keyframes left {
   0% {transform: translate(25px);}
   50% {transform: translate(-25px);}
   100% {transform: translate(25px);}
   }