body {
    font-family: 'Karla', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: #2c2c2c;
    color: #fff;
    padding: 10px 0;
    position: relative;
}

header h1 {
    margin: 0;
    font-size: 24px;
    display: inline-block;
}

header nav {
    display: inline-block;
    float: right;
    margin-top: 10px;
}

header nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}

header nav ul li {
    display: inline-block;
    margin-left: 20px;
    position: relative;
}

header nav ul li a {
    color: #fff;
    text-decoration: none;
}

header nav ul li ul {
    display: none;
    position: absolute;
    background-color: #444;
    list-style-type: none;
    padding: 10px 0;
    top: 35; /* Adjust this value if needed to ensure the submenu is correctly placed */
    left: 0;
    width: 200px;
    z-index: 1000; /* Ensure the submenu stays on top */
}

header nav ul li ul li {
    display: block;
    margin: 0;
}

header nav ul li:hover ul {
    display: block;
}

header nav ul li ul li a {
    color: #fff;
    padding: 10px 20px;
    display: block;
    text-decoration: none;
}

header nav ul li ul li a:hover {
    background-color: #555;
}

.container {
    width: 80%;
    margin: 0 auto;
    padding: 20px 0;
    flex: 1;
}

section.main-content {
    background-color: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    flex: 1;
}

footer {
    background-color: #2c2c2c;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    width: 100%;
    position: relative;
    bottom: 0;
    left: 0;
}