.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
}

.modal_conteudo {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    width: 90%;
    max-width: 450px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
}