body {
    font-family: 'Arial', sans-serif;
}

#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    background-color: #f3f4f6;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: 50% 50%;
}

.container {
    position: relative;
    z-index: 1;
}

h2 {
    color: #1e3a8a;
}

.bg-navy-700 {
    background-color: #1e3a8a;
}

.text-navy-800 {
    color: #1e40af;
}

.border-navy-500 {
    border-color: #3b82f6;
}

.unclickable-link {
    color: inherit;
    text-decoration: none;
    cursor: text;
    pointer-events: none;
}

@media (max-width: 768px) {
    header nav ul {
        flex-direction: column;
        align-items: center;
    }

    header nav ul li {
        margin-bottom: 0.5rem;
    }
}