.stb-button {
    padding: 10px 20px;
    background-color: #0073aa;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
.stb-button:hover {
    background-color: #005177;
}
.stb-timer-block {
    margin-bottom: 1em;
}
.stb-countdown {
    margin-left: 10px;
    font-weight: bold;
    color: #d35400;
}