@media (max-width: 640px) {
  .book-face {
    width: 320px;
    min-height: 155px;
  }
}
@media (min-width: 641px) {
  .book-face {
    width: 135px;
    min-height: 97px;
  }
}
.book-thumb-inner .book-face a {
  min-height: 155px;
}
#loading{
  position: fixed;
  top: 0;
  z-index: 100;
  width: 100%;
  height:100%;
  display: none;
  background: rgba(255,255,255,0.5);
}
.cv-spinner {
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}
.spinner {
  width: 40px;
  height: 40px;
  border: 4px #ddd solid;
  border-top: 4px #2e93e6 solid;
  border-radius: 50%;
  animation: sp-anime 0.8s infinite linear;
}
@keyframes sp-anime {
  100% {
    transform: rotate(360deg);
  }
}