body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
}

header {
    background-color: #35424a;
    color: #ffffff;
    padding: 20px 0;
    text-align: center;
    font-size: 2em;
    font-weight: bold;
}

main {
    padding: 20px;
}

footer {
    background-color: #35424a;
    color: #ffffff;
    text-align: center;
    padding: 10px 0;
    position: fixed;
    width: 100%;
    bottom: 0;
}

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

li {
    background-color: #e2e2e2;
    margin: 5px 0;
    padding: 10px;
    border-radius: 4px;
}

a {
    color: #35424a;
    text-decoration: none;
    display: block;
}
a:hover {
    background-color: #d4d4d4;
    text-decoration: dashed underline;
}