/* books section */
.books-section {
  background-color: #f8f9fa;
}
.books-section .container {
  min-height: 100vh;
  margin: 100px auto;
  max-width: 800px;
}
.card {
  box-shadow: rgba(68, 184, 157, 0.5) 0px 0px 1px 1px;
  position: relative;
  overflow: hidden;
  width: 233px;
}

.card-img {
  transition: transform 0.3s;
}

.card:hover .card-img {
  transform: scale(1.1);
}

.card-img-overlay {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background-color: rgba(6, 53, 71, 0.75);
  color: #dddddd;
  opacity: 0;
  z-index: 1;
  transition: opacity 0.3s;
  padding: 5px;
}

.card:hover .card-img-overlay {
  opacity: 1;
}