#container{
    height: 100vh;
    background-color: black;
}
.circle{
    height:100px;
    width: 100px;
    scale: 1;
    border-radius: 50%; 
    border: 1px solid white;    
    position: absolute;
    animation: display 2s ease-in 0s 1 normal;
}
@keyframes display{
    from {
        scale: 1;
    }
    to{
        scale:0.7
    }
}