body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: linear-gradient(135deg, #ff9a9e 0%, #fad0c4 100%);
    font-family: 'Arial', sans-serif;
}
.cronometro {
    position: relative;
    width: 300px;
    height: 300px;
    border: 10px solid #fff;
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    background: radial-gradient(circle, #ff9a9e, #fad0c4);
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    font-size: 2em;
}
.cronometro::before {
    content: '';
    position: absolute;
    width: 280px;
    height: 280px;
    border: 10px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.pulsanti {
    display: flex;
    gap: 10px;
    position: absolute;
    bottom: 20px;
}
.pulsante {
    background: #fff;
    color: #ff9a9e;
    border: none;
    padding: 10px 20px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 1em;
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}