body {
  margin: 0;
  padding: 0;
  background: #7dc6ff;
  font-family: Arial, sans-serif;
  color: white;
}

.header {
  width: 100%;
  padding: 15px;
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(10px);
  display: flex;
  justify-content: space-between;
}

.header a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

.container { padding: 20px; }