body {
    margin: 0;
    padding: 0;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background-color: #ffffff;
}

header {
    text-align: center;
    padding: 20px 0;
}

header .logo img {
    max-width: 80px;
}

header h1 {
    margin-top: 10px;
    font-size: 2em;
}

nav {
    margin-top: 15px;
}

nav a {
    margin: 0 15px;
    text-decoration: none;
    color: #333;
    font-size: 1em;
    padding: 8px 16px;
    border: 1px solid #333;
    border-radius: 4px;
}

nav a:hover {
    background-color: #333;
    color: #fff;
}

main {
    text-align: center;
    padding: 40px 20px;
}

.welcome-section img {
    max-width: 80%;
    height: auto;
}

.welcome-section p {
    font-size: 1.2em;
    margin-top: 20px;
}