newcss.css

div {
    background: rebeccapurple;
    height: 200px;
    width: 200px;
    animation-name: myanim;
    animation-duration: 2s;
    animation-iteration-count: infinite;
}

@keyframes myanim {
    0% {}
    25% {
        margin-left: 700px;
        background: red;
    }
    50% {
        margin-left: 700px;
        margin-top: 400px;
        background: green;
    }
    75% {
        margin-left: 0px;
        margin-top: 400px;
        background: black;
    }
    100% {
        margin-left: 0px;
        margin-top: 0px;
        background: teal;
    }
}

table,
th,
td {
    border: 1px solid black;
    width: 30%;
}