body {
    font-family: 'Courier New', Courier, monospace;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #0a0a0a;
    color: #ffffff;
}
header {
    background-color: #1c2526;
    color: #00b7eb;
    text-align: center;
    padding: 2rem;
    border-bottom: 2px solid #00b7eb;
}
header h1 {
    margin: 0;
    font-size: 2.5rem;
    text-shadow: 0 0 10px #00b7eb;
}
nav {
    background-color: #1c2526;
    padding: 1rem;
    border-bottom: 2px solid #00b7eb;
}
nav ul {
    list-style: none;
    padding: 0;
    text-align: center;
}
nav ul li {
    display: inline;
    margin: 0 1rem;
}
nav ul li a {
    color: #00b7eb;
    text-decoration: none;
    font-weight: bold;
}
nav ul li a:hover, nav ul li a.active {
    color: #ffffff;
    text-shadow: 0 0 5px #00b7eb;
}
.container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}
section {
    background-color: #1c2526;
    padding: 2rem;
    margin-bottom: 1rem;
    border-radius: 5px;
    border: 1px solid #00b7eb;
}
h2 {
    color: #00b7eb;
    text-shadow: 0 0 5px #00b7eb;
}
a {
    color: #00b7eb;
}
a:hover {
    color: #ffffff;
}
code {
    background-color: #0a0a0a;
    padding: 2px 5px;
    border-radius: 3px;
    color: #00b7eb;
}
pre {
    background-color: #0a0a0a;
    color: #00b7eb;
    padding: 1rem;
    border-radius: 5px;
    border: 1px solid #00b7eb;
    overflow-x: auto;
}
footer {
    text-align: center;
    padding: 1rem;
    background-color: #1c2526;
    color: #00b7eb;
    border-top: 2px solid #00b7eb;
    width: 100%;
}
@media (max-width: 600px) {
    header h1 {
        font-size: 1.8rem;
    }
    nav ul li {
        display: block;
        margin: 0.5rem 0;
    }
}