body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
    background-color: #f0f0f0;
    padding: 1em;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    width: 100px;
    height: 100px;
    margin-right: 20px;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: space-between;
}

nav li {
    margin-right: 20px;
}

nav a {
    text-decoration: none;
    color: #333;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2em;
}

section {
    background-color: #fff;
    padding: 2em;
    margin-bottom: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h2 {
    margin-top: 0;
}

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