#alerte-actus-barre-dynamique {
    width: 100%;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-family: Arial, sans-serif;
    font-weight: bold;
    position: fixed; 
    top: 0;
    left: 0;
    z-index: 10000;
    padding: 0 50px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    text-transform: uppercase;
    /* Préparation pour l'animation JS */
    will-change: transform, opacity;
}

#alerte-actus-barre-dynamique span {
    font-size: 16px;
    text-align: center;
}

#alerte-actus-bouton-fermer {
    position: absolute;
    right: 20px;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid #fff;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    outline: none;
}

#alerte-actus-bouton-fermer:hover {
    background: #ffffff;
    color: #e63946; 
    transform: scale(1.1);
}