body{
    background-color: violet;
}

#main_bucket {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 10px;
    margin: 10px;
}

#inner_bucket {
    border: 0.4em solid black;
    border-radius: 30%;
    border-color: black;
    padding: 1%;
}

button{
    margin: 0.1em;
    color: whitesmoke;
    background-color: blueviolet;
    border-radius: 45%;
    padding: 0.5em;
}