body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background-color: green; /* Fond vert */
    margin: 0;
    font-family: 'Roboto', Arial, sans-serif;
}

.progress-container {
    width: 80%;
    background-color: gray; /* Barre principale en gris */
    border-radius: 25px;
    margin: 20px 0;
}

.progress-bar {
    width: 0%;
    height: 30px;
    background-color: white; /* Barre de progression en blanc */
    border-radius: 25px;
    transition: width 1s linear;
}

#percentage {
    font-size: 2em;
    font-weight: bold;
    color: white; /* Police blanche */
}