div{
    width:200px;
    padding:20px;
    text-align: center;
    font-weight: bold;
    font-size: 25px;
    background-color: purple;
    color:#fff;
    border-radius: 10px;
    margin:100px 0px;
    position:relative;
    animation:ani 5s linear 1s 2 alternate;
}

/* Keyframes */
@keyframes ani{
    0% {
        background-color: purple;
        left:0px;
    }
    25% {
    background-color: #C3F;
    left: 20%;
  }
50% {
    background-color: #F9F;
    left: 40%;
    transform: rotate(180deg);
  }
75% {
    background-color: #F6F;
    left: 60%;
  }
 100% {
    background-color: #F0F;
    left: 85%;
  }

}