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

header {
    background-color: #50b3a2;
    color: #ffffff;
    text-align: center;
    padding: 1em;
}

nav {
    display: flex;
    justify-content: space-around;
    background-color: #333;
}

nav a {
    color: white;
    text-decoration: none;
    text-align: center;
    padding: 1em;
}

#container {
    margin: auto;
    width: 50%;
    padding: 2em;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: 50%;
}

h1,
h2,
h3,
h4 {
    font-size: 2em;
}

p {
    margin-bottom: 1em;
}