body{
    margin:0;
    padding:0;
    background-color: black;
    height:100vh;
    display:flex;
    justify-content: center;
    align-items: center;
    overflow:hidden;
}
.circle{
    position: absolute;
    width:50px;
    height:50px;
    border-radius: 50%;
    display:flex;
    justify-content: center;
    align-items: center;
    color:white;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
    text-align:center;
    opacity:1;
    overflow: hidden;
    animation:grow 5s forwards;
    background-color: blue;
}
@keyframes grow {
    0%{
        transform:scale(1);
        opacity:1;
        font-size:10px;
    }
    100%{
        transform:scale(3);
        opacity:0;
        font-size:40px;
    }
}