body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background: #fff;
  color: #222;
}
header {
  background: #f8f8f8;
  padding: 20px;
  text-align: center;
}
nav {
  margin-top: 10px;
}
nav a {
  margin: 0 10px;
  color: #0073e6;
  text-decoration: none;
  font-weight: bold;
}
main {
  padding: 40px 20px;
  max-width: 900px;
  margin: auto;
  text-align: center;
}
.books section {
  margin-bottom: 40px;
}
.books img {
  width: 220px;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
.payhip-buy-now {
  display: inline-block;
  margin-top: 10px;
  padding: 10px 20px;
  background-color: #0073e6;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
}
footer {
  background: #f4f4f4;
  padding: 20px;
  text-align: center;
  font-size: 14px;
}