.roboto {
    font-family: "Roboto", sans-serif;
    font-optical-sizing: auto;
    font-weight: normal;
    font-style: normal;
    text-align: center;
}

@media screen and (max-width: 640px) {
    .roboto {
        font-size: 1.5rem;
        padding: 0.5rem;
    }
}

.timer-warning {
    color: #ff4444;
}