html, body {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.about-section {
    max-width: 800px;
    margin: 0 auto;
}

.about-section h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: #333;
}

.about-section p {
    font-size: 1rem;
    margin-bottom: 15px;
    color: #555;
}

footer {
    text-align: center;
    padding: 2.5px;
    background-color: white;
    font-size: 0.9rem;
    color: #555;
}

/* Responsive Navbar */
@media (max-width: 768px) {
    .navbar-collapse {
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        background-color: white;
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        width: 90%;
        text-align: center;
        z-index: 1050;
        overflow-y: auto;
        max-height: 80vh;
    }

    .navbar-nav {
        flex-direction: column;
        gap: 20px;
    }

    .navbar-toggler {
        position: absolute;
        top: 10px;
        right: 10px;
    }
}