.po-pizarra-contenedor {
    max-width: 100%;
    margin: 20px auto;
    text-align: center;
    font-family: sans-serif;
}

#pizarraOnline {
    background-color: #ffffff;
    border: 2px solid #333333;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    cursor: crosshair;
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto 15px auto;
}

.po-pizarra-controles {
    margin-top: 10px;
}

.po-btn {
    background-color: #333333;
    color: #ffffff;
    border: none;
    padding: 10px 20px;
    font-size: 14px;
    cursor: pointer;
    border-radius: 4px;
    transition: background 0.2s ease;
}

.po-btn:hover {
    background-color: #555555;
}