.container-custom {
    background-color: #343a40; /* bg-dark */
    color: #ffffff; /* Texto contrastante */
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    max-width: 30%;
}
.center-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

@media (max-width:480px)  { 
    .container-custom{
        max-width: 100%;
    }
}