animation in css

.wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh
}

.pulse {
    width: 70px;
    height: 70px;
    background-color: red;
    border-radius: 50%;
    position: relative;
    animation: animate 3s linear infinite
}

body{
background-color: purple;
}

@keyframes party{
    0% {background-color: red;}
    10% {background-color: orange;}
    20% {background-color: yellow;}
    30% {background-color: green;}
    40% {background-color: blue;}
    50% {background-color: purple;} 
}

@-webkit-keyframes party{
    0% {background-color: red;}
    10% {background-color: orange;}
    20% {background-color: yellow;}
    30% {background-color: green;}
    40% {background-color: blue;}
    50% {background-color: purple;} 
}