@media (max-width: 768px) {
    .navbar-nav {
        text-align: center;
    }
}

.carousel-item {
    height: 100vh;
    min-height: 500px;
    background-size: cover;
    background-position: center;
    position: relative;
}

/* Black overlay */
.carousel-item::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 1;
}

.carousel-caption {
    z-index: 2;
}

.carousel-caption h1 {
    font-weight: bold;
}

.carousel-caption p {
    max-width: 600px;
    margin: 0 auto 1rem;
}

.carousel-caption .btn {
    padding: 10px 25px;
    font-size: 1rem;
}