body {
    font-family: sans-serif;
    margin: 0;
    background-color: #f0f0f0;
}

header {
    background-color: #333;
    color: white;
    padding: 1rem;
    text-align: center;
}

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

nav li {
    display: inline-block;
    margin: 0 1rem;
}

nav a {
    color: white;
    text-decoration: none;
}

main {
    padding: 2rem;
}

#about {
    text-align: center;
}

.features {
    display: flex;
    justify-content: space-around;
    margin-top: 2rem;
}

.features button {
    background-color: #4CAF50;
    color: white;
    padding: 1rem;
    border: none;
    cursor: pointer;
}

footer {
    background-color: #333;
    color: white;
    padding: 1rem;
    text-align: center;
    position: fixed;
    bottom: 0;
    width: 100%;
}