body {
  margin: 0;
  padding: 0;
  background: black;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

 .dot1, .dot2, .dot3 {
  background: #fff;
  width: 5px;
  height: 5px;
   border:double;
   border-color:black;
  border-radius: 50%;
  margin: 10px;
}

.dot1 {
  animation: jump 1.6s -0.32s linear infinite;
  background: #4B0082;
}
.dot2 {
    animation: jump 1.6s -0.16s linear infinite;
    background: #B22222;
}
.dot3 {
    animation: jump 1.6s linear infinite;
    background: #006400;
}

@keyframes jump {
  0%, 80%, 100% { 
    -webkit-transform: scale(0);
    transform: scale(0);
  } 40% { 
    -webkit-transform: scale(2.0);
    transform: scale(2.0);
  }
}