#campana-formulario {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: Arial, sans-serif;
    background: #fff;
}
#campana-formulario h2 {
    margin-top: 20px;
    color: #0073aa;
    border-bottom: 1px solid #ddd;
    padding-bottom: 5px;
}
#campana-formulario label {
    display: block;
    margin-bottom: 10px;
}
#campana-formulario input,
#campana-formulario select,
#campana-formulario textarea {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    margin-bottom: 10px;
    border-radius: 4px;
    border: 1px solid #ccc;
    box-sizing: border-box;
}
#campana-formulario button {
    padding: 10px 20px;
    background: #0073aa;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}
#campana-formulario button:hover {
    background: #005177;
}
.detalles_condicional {
    margin-left: 10px;
    padding: 5px 0;
    display: none;
}