body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.sidebar {
    background-color: #0a5047;
    color: #fff;
    padding: 20px;
    width: 150px;
    position: fixed;
    height: 100%;
    overflow: auto;
}

.sidebar h2 {
    margin-bottom: 20px;
}

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

.sidebar ul li {
    margin-bottom: 10px;
}

.sidebar ul li a {
    color: #fff;
    text-decoration: none;
}

.sidebar ul li a:hover {
    text-decoration: underline;
}

.content {
    margin-left: 250px;
    padding: 20px;
}

.header, .footer {
    background-color: #0a5047;
    color: #fff;
    padding: 0px 20px;
    text-align: center;
}

.header a, .footer a {
    color: #fff;
    text-decoration: none;
}

.header a:hover, .footer a:hover {
    text-decoration: underline;
}

.content h1 {
    margin-bottom: 20px;
    color: #333;
}

.content img {
    width: 100%;
    height: auto;
    margin-bottom: 20px;
}

.text-block {
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

button {
    background-color: #0a5047;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    margin: 10px 0;
    display: block;
    width: 200px;
    text-align: center;
}

button:hover {
    background-color: #084236;
}