@media (max-width: 660px) {
  .bb-custom-wrapper {
    margin: 0 auto 20px;
  }

  .bb-item img {
    width: 100%;
    height: auto; /* Maintain aspect ratio */

  }

  .bb-bookblock {
    width: 100%; /* Ensure the image takes the full width of the container */
    max-width: 450px; /* Add a max-width to maintain the design on larger screens */
    height: auto; /* Maintain the aspect ratio */
  }
}

.bb-bookblock {
  width: 100%; /* Ensure the image takes the full width of the container */
  max-width: 650px; /* Add a max-width to maintain the design on larger screens */
  height: auto; /* Maintain the aspect ratio */
 margin: 0 auto;
 position: relative;
 z-index: 100;
 -webkit-perspective: 1300px;
 perspective: 1300px;
 -webkit-backface-visibility: hidden;
 backface-visibility: hidden;
  padding-bottom: 55.69%; /* Maintain aspect ratio (362/650 * 100) */

}
.bb-bookblock > .bb-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.bb-page {
 position: absolute;
 -webkit-transform-style: preserve-3d;
 transform-style: preserve-3d;
 -webkit-transition-property: -webkit-transform;
 transition-property: transform;
}





.bb-vertical .bb-page {
 width: 50%;
 height: 100%;
 left: 50%;
 -webkit-transform-origin: left center;
 transform-origin: left center;
}

.bb-horizontal .bb-page {
 width: 100%;
 height: 50%;
 top: 50%;
 -webkit-transform-origin: center top;
 transform-origin: center top;
}

.bb-page > div,
.bb-outer,
.bb-content,
.bb-inner {
 position: absolute;
 height: 100%;
 width: 100%;
 top: 0;
 left: 0;
 -webkit-backface-visibility: hidden;
 backface-visibility: hidden;
}

.bb-vertical .bb-content {
 width: 200%;
}

.bb-horizontal .bb-content {
 height: 200%;
}

.bb-page > div {
 width: 100%;
 -webkit-transform-style: preserve-3d;
 transform-style: preserve-3d;
}

.bb-vertical .bb-back {
 -webkit-transform: rotateY(-180deg);
 transform: rotateY(-180deg);
}

.bb-horizontal .bb-back {
 -webkit-transform: rotateX(-180deg);
 transform: rotateX(-180deg);
}

.bb-outer {
 width: 100%;
 overflow: hidden;
 z-index: 999;
}

.bb-overlay, 
.bb-flipoverlay {
 background-color: rgba(0, 0, 0, 0.7);
 position: absolute;
 top: 0px;
 left: 0px;
 width: 100%;
 height: 100%;
 opacity: 0;
}

.bb-flipoverlay {
 background-color: rgba(0, 0, 0, 0.2);
}

.bb-bookblock.bb-vertical > div.bb-page:first-child,
.bb-bookblock.bb-vertical > div.bb-page:first-child .bb-back {
 -webkit-transform: rotateY(180deg);
 transform: rotateY(180deg);
}

.bb-bookblock.bb-horizontal > div.bb-page:first-child,
.bb-bookblock.bb-horizontal > div.bb-page:first-child .bb-back {
 -webkit-transform: rotateX(180deg);
 transform: rotateX(180deg);
}

/* Content display */
.bb-content {
 background: #fff;
}

.bb-vertical .bb-front .bb-content {
 left: -100%;
}

.bb-horizontal .bb-front .bb-content {
 top: -100%;
}

/* Flipping classes */
.bb-vertical .bb-flip-next,
.bb-vertical .bb-flip-initial {
 -webkit-transform: rotateY(-180deg);
 transform: rotateY(-180deg);
}

.bb-vertical .bb-flip-prev {
 -webkit-transform: rotateY(0deg);
 transform: rotateY(0deg);
}

.bb-horizontal .bb-flip-next,
.bb-horizontal .bb-flip-initial {
 -webkit-transform: rotateX(180deg);
 transform: rotateX(180deg);
}

.bb-horizontal .bb-flip-prev {
 -webkit-transform: rotateX(0deg);
 transform: rotateX(0deg);
}

.bb-vertical .bb-flip-next-end {
 -webkit-transform: rotateY(-15deg);
 transform: rotateY(-15deg);
}

.bb-vertical .bb-flip-prev-end {
 -webkit-transform: rotateY(-165deg);
 transform: rotateY(-165deg);
}

.bb-horizontal .bb-flip-next-end {
 -webkit-transform: rotateX(15deg);
 transform: rotateX(15deg);
}

.bb-horizontal .bb-flip-prev-end {
 -webkit-transform: rotateX(165deg);
 transform: rotateX(165deg);
}

.bb-item {
 width: 100%;
 height: 100%;
 position: absolute;
 top: 0;
 left: 0;
 display: none;
 background: #fff;
}

/* No JS */
.no-js .bb-bookblock, 
.no-js ul.bb-custom-grid li {
 width: auto;
 height: auto;
}

.no-js .bb-item {
 display: block;
 position: relative;
}