body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: black;
  background-size: cover;
  color: white;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  background-color: rgba(0, 0, 0, 0.8);
}

.logo {
  font-size: 1.5em;
  font-weight: bold;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0px;
  display: flex;
}

nav ul li {
  margin: 0 10px;
}

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

main {
  padding: 20px;
}

.books {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}
.book {
  background-color: rgba(0, 0, 0, 0.8);
  padding: 10px;
  border-radius: 8px;
  width: 200px;
  text-align: center;
  cursor: pointer;
}
.book img {
  max-width: 100%;
  border-radius: 8px;
}