trans-anim.css

body{
    font-family: 'Poppins', sans-serif;
    padding: 0;
    margin: 0;
}
.all{
    position: relative;
}
.container{
    height: 100px;
    width: 400px;
    background-color: orange;
    color: white;
    transition: height 2s linear 0.5s;   /* property   duration   timing-function   delay*/
    animation-name: changecolor;
    animation-duration: 4s;
    animation-iteration-count: infinite;
}
/* .container:hover{
    height: 200px;
}
@keyframes changecolor{
    from {background-color: orange;}
    to {background-color: black;}
} */
.box{
    position: absolute;
    width: 150px;
    background: purple;
    height: 150px;
    animation-name: movemybox;
    animation-duration: 2s;
    /* animation-iteration-count: infinite; */
}
@keyframes movemybox{
    0% {
        background: white;
        left: 0;
        top: 0;
        border-radius: 0;
    }
    25% {
        background: red;
        left: 500px;top: 0;
        border-radius: 50% 0 0 0;
    }
    50% {
        background: purple;
        left: 500px;
        top: 500px;
        border-radius: 50% 50%;
    }
    75% {
        background: green;
        left: 0;top: 500px; 
        border-radius: 50% 0;
    }
    100% {background: khaki;
        left: 0;
        top: 0;
        border-radius: 50% 50% 50% 0;
    }
}