* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f0f0f0;
}

header {
    background-color: #333;
    color: white;
    padding: 20px;
    text-align: center;
}

header nav a {
    color: white;
    margin: 0 15px;
    text-decoration: none;
}

header nav a:hover {
    text-decoration: underline;
}

main {
    padding: 40px;
    background-color: white;
    text-align: center;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 15px;
    position: relative;
    bottom: 0;
    width: 100%;
}