body {
    font-family: 'Helvetica Neue', sans-serif;
    background-color: #f0f0f0;
    color: #333;
    margin: 0;
    padding: 0;
}

header {
    background-color: #81c784;
    color: white;
    padding: 15px 0;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

header h1 {
    margin: 0;
    font-size: 2.2em;
}

.container {
    display: flex;
}

.sidebar {
    background-color: #333;
    padding: 10px;
    width: 200px;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    overflow: auto;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
}

.sidebar ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar ul li {
    margin: 10px 0;
}

.sidebar ul li a {
    color: white;
    text-decoration: none;
    padding: 8px;
    display: block;
    transition: background 0.3s;
}

.sidebar ul li a:hover {
    background-color: #575757;
}

.content {
    margin-left: 220px;
    padding: 20px;
    max-width: 800px;
    background-color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h2 {
    color: #81c784;
    border-bottom: 2px solid #81c784;
    padding-bottom: 10px;
    margin-top: 20px;
}

section {
    margin: 20px 0;
}

section h3 {
    color: #333;
    margin-top: 20px;
    font-size: 1.5em;
}

section p {
    margin: 10px 0;
    text-align: justify;
}

ul {
    list-style: disc;
    padding-left: 20px;
}

ul li {
    margin-bottom: 10px;
}

footer {
    background-color: #81c784;
    color: white;
    text-align: center;
    padding: 2px 0;
    position: fixed;
    width: 100%;
    bottom: 0;
    box-shadow: 0 -2px 4px rgba(0, 0, 0, 0.1);
    font-size: 0.9em;
}