body {
    font-family: "Arial", sans-serif;
    margin: 0;
    background-color: #e3f0fa;
    color: #111;
    line-height: 1.6;
}

nav {
    background-color: #1e5a86;
    padding: 15px 0;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

nav a {
    color: #ffffff;
    text-decoration: none;
    font-weight: bold;
    margin: 0 15px;
    padding: 8px 12px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

nav a:hover {
    background-color: #3b8cc7;
    text-decoration: none;
    transform: scale(1.05);
}

h1 {
    text-align: center;
    margin: 50px 20px 30px 20px;
    color: #1e5a86;
    font-size: 2.2em;
}

p {
    max-width: 850px;
    margin: 20px auto;
    text-align: justify;
    font-size: 1.05em;
    line-height: 1.7;
    color: #222;
}

h2 {
    text-align: center;
    margin: 40px 20px 20px 20px;
    font-size: 1.8em;
    color: #1e5a86;
    border-bottom: 2px solid #3b8cc7;
    display: inline-block;
    padding-bottom: 5px;
}

@media (max-width: 900px) {
    nav a {
        display: block;
        margin: 10px 0;
    }
    h1, h2, p {
        margin-left: 15px;
        margin-right: 15px;
    }