body{
    display: flex;;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
}

button{
    padding: 20px;
    margin: 10px;
    border-radius: 50px;
    border: 3px black solid ;
}
.avatar{
    width: 2vw;
    height: 2vh;
    border-radius: 50px;
    background-color: red;
}