#main {
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url(/images/background_World.png);
    background-attachment: fixed;
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    height: 100vh;
}

.home-inner {
    text-align: center;
    animation: fadeIn 2s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.card-body {
    transition: transform 0.3s ease-in-out;
}

.card-body:hover {
    transform: scale(1.05);
}

.carousel-control-next,
.carousel-control-prev,
#darker {
    filter: invert(100%);
}

html,
body {
    height: 100%;
    font-family: 'Ubuntu', sans-serif;
}

#main .home-inner {
    padding-top: 200px;
}

body {
    background: #333;
    color: whitesmoke;
}

.nav-link {
    font-size: 1.25rem; /* Increase font size */
    padding: 0.5rem 1rem; /* Increase padding */
    border: 2px solid transparent; /* Add border */
    transition: border-color 0.3s ease-in-out; /* Smooth transition for border color */
}

.navbar {
    background-color: rgba(23, 24, 26, 0.9); /* Darker background color for better visibility */
    border-bottom: 2px solid rgba(23, 24, 26, 0.9); /* Add border across the top portion */
}

.fab,
.fas {
    padding: 5px;
    border-radius: 5px;
    background: #333;
    color: whitesmoke;
}

a:link {
    text-decoration: none;
}

a:visited {
    text-decoration: none;
    color: whitesmoke;
}

a:hover {
    color: turquoise;
}

a:active {
    color: turquoise;
    text-decoration: none;
}

@media (max-width: 576px) {

    nav.navbar {
        background: rgba(52, 58, 64, 0.7);
    }

    h1.display-3,
    h3.display-3 {
        font-size: 2.0rem;
    }

    h2.display-3 {
        font-size: 2.5rem;
    }
}

header#main .home-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

header#main h1, header#main h2, header#main h4 {
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

header#main p.lead {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}