.card-example {
  border: 1px solid #ddd;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  padding: 20px;
  margin: 15px 0;
  background-color: #f7f7f7;
  overflow: hidden;
}

.btn {
  white-space: nowrap; /* 禁用按钮内文字换行 */
}

a, a:hover, a:focus {
  color: inherit;
}

a {
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.book-info img{
  width: 120px;
}

article p {
  font-size: 1.3rem;
}