body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  margin: 40px auto;
  max-width: 800px;
  line-height: 1.6;
  color: #222;
  background-color: #fff;
}

header {
  text-align: center;
  margin-bottom: 40px;
}

h1 {
  font-size: 2em;
  margin-bottom: 0.2em;
}

nav a {
  margin: 0 10px;
  text-decoration: none;
  color: #007acc;
  font-weight: 500;
}

nav a:hover {
  text-decoration: underline;
}

section {
  margin-bottom: 50px;
}

footer {
  font-size: 0.9em;
  text-align: center;
  color: #888;
  margin-top: 40px;
}

.profile-photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;      /* circular image */
  object-fit: cover;
  display: block;
  margin: 20px auto;       /* center it */
  box-shadow: 0 0 8px rgba(0,0,0,0.1);
}