body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f7f9fb;
  margin: 0;
  padding: 0;
  color: #333;
}

header {
  text-align: center;
  background: linear-gradient(135deg, #0077b6, #0096c7);
  color: white;
  padding: 20px 10px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

header h1 {
  margin-bottom: 5px;
  font-size: 1.8em;
}

header p {
  font-size: 1em;
  opacity: 0.9;
}

#mynetwork {
  width: 100%;
  height: 85vh;
  background: white;
  border: 2px solid #ddd;
  margin: 10px auto;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  border-radius: 8px;
}

footer {
  text-align: center;
  background: #eaf4f8;
  padding: 10px;
  font-size: 0.9em;
  color: #00506b;
  border-top: 1px solid #cce0eb;
}