.px-rem-container {
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    background: #fafafa;
    font-family: Arial, sans-serif;
}
.px-rem-container h2 {
    text-align: center;
    margin-bottom: 1rem;
}
.px-rem-container .flex-wrap {
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
}
.px-rem-container input {
    padding: 0.5rem;
}