* {
  margin: 0px;
  padding: 0px;
}
#main {
  width: 800px;
  height: 800px;
  border: 1px solid black;
  margin: 10px auto;
  position: relative;
}
.circle {
  width: 150px;
  height: 150px;
  position: absolute;
  top: 10px;
  left: 10px;
  border-radius: 50%;
  transition: all 1s;
}
#orange {
  background-color: orange;
}
#blue {
  background-color: blue;
}
#green {
  background-color: green;
}
#main:hover #orange {
  top: 600px;
  left: 100px;
}
#main:hover #blue {
  top: 600px;
  left: 325px;
}
#main:hover #green {
  top: 600px;
  left: 550px;
}
