body {
    font-family: 'Roboto', sans-serif;
    background-color: #f5f5f5;
    color: #333;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header, .navbar-brand {
    background-color: #fff;
    color: #2ecc71; /* Emerald Green for branding */
}

.navbar-brand {
    font-weight: bold;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    color: #2ecc71; /* Emerald Green for branding */
    font-size: 24px; /* Increase font size of brand name */
}

.container-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    background-color: #fff;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    padding: 2rem;
    margin-bottom: 20px;
    color: #333;
    width: 90%;
    max-width: 400px;
}

footer {
    background-color: #1e1e1e; /* Darker Gray */
    color: #bbb;
    text-align: center;
    padding: 1rem;
    width: 100%;
}