body {
    text-align: center;
    font-weight: bold;
}

.container {
    max-width: 500px;
    margin: auto;
}

input,
select {
    margin: 1rem 0;
    padding: 1rem;
    font-weight: bold;
    font-family: serif;
    border-radius: 0;
    border-color: aqua;
}

.result {
    font-size: 16px;
    font-weight: bold;
    margin-top: 16px;
}