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

.container {
max-width: 1200px;
margin: 0 auto;
padding: 0 20px;
}

.header {
background-color: #333;
color: #fff;
padding: 20px;
}

.navbar {
background-color: #f4f4f4;
padding: 10px;
}

.navbar a {
text-decoration: none;
color: #333;
padding: 10px;
}

.content {
display: flex;
flex-wrap: wrap;
}

.sidebar {
flex: 1;
padding: 20px;
}

.main-content {
flex: 3;
padding: 20px;
}

.footer {
background-color: #333;
color: #fff;
padding: 20px;
}