body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background: #f5f5f5;
}
nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  padding: 1rem;
  background: #003b80;
}
nav li {
  margin: 0 1rem;
}
nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}
.card {
  background: white;
  max-width: 700px;
  margin: 2rem auto;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  text-align: center;
}
.card img {
  max-width: 100%;
  height: auto;
}
.cenik-list {
  text-align: left;
}
.cenik-list .highlight {
  font-size: 1.2rem;
  color: #003b80;
}
.contact {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.contact-left {
  text-align: left;
}
.contact-right {
  padding-left: 2rem;
}