.bk-list {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.bk-content h2 {
    font-size: 20px;
    font-weight: bold;
}

.bk-content table {
    color: black;
    border-style: hidden;
    font-size: 15px;
}

.bk-list li {
    position: relative;
    list-style-type: none;
    width: 275px;
 
    z-index: 1;
    margin: 0px 40px 40px 0;
    -webkit-perspective: 1800px;
    perspective: 1900px;
}

.bk-info {
    position: relative;
    margin-top: 330px;
}

.bk-info h3 {
    text-transform: capitalize;
    font-size: 19px;
    padding-top: 25px;
    height: 66px;
}

.bk-list li .bk-book {
    position: absolute;
    width: 100%;
    height: 400px;
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
    -webkit-transition: -webkit-transform .5s;
    transition: transform .5s;
}

.bk-list li .bk-book.bk-bookdefault:hover {
    -webkit-transform: rotate3d(0, 1, 0, 35deg);
    transform: rotate3d(0, 1, 0, 35deg);
}

.bk-list li .bk-book>div,
.bk-list li .bk-front>div {
    display: block;
    position: absolute;
}

.bk-list li .bk-front {
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
    -webkit-transform-origin: 0% 50%;
    transform-origin: 0% 50%;
    -webkit-transition: -webkit-transform .5s;
    transition: transform .5s;
    -webkit-transform: translate3d(0, 0, 20px);
    transform: translate3d(0, 0, 20px);
    z-index: 10;
}

.bk-list li .bk-front>div {
    z-index: 1;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
}

.bk-list li .bk-page {
    -webkit-transform: translate3d(0, 0, 19px);
    transform: translate3d(0, 0, 19px);
    display: none;
    width: 250px;
    height: 330px;
    top: 5px;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    z-index: 9;
}

.bk-list li .bk-front,
.bk-list li .bk-back,
.bk-list li .bk-front>div {
    width: 250px;
    height: 330px;
}

.bk-list li .bk-left,
.bk-list li .bk-right {
    width: 40px;
    left: -20px;
}

.bk-list li .bk-top,
.bk-list li .bk-bottom {
    width: 295px;
    height: 40px;
    top: -15px;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.bk-list li .bk-back {
    -webkit-transform: rotate3d(0, 1, 0, -180deg) translate3d(0, 0, 20px);
    transform: rotate3d(0, 1, 0, -180deg) translate3d(0, 0, 20px);

    border-radius: 3px 0 0 3px;
}

.bk-list li .bk-cover-back {
    -webkit-transform: rotate3d(0, 1, 0, -179deg);
    transform: rotate3d(0, 1, 0, -179deg);
}

.bk-list li .bk-right {
    height: 390px;
    top: 5px;
    -webkit-transform: rotate3d(0, 1, 0, 90deg) translate3d(0, 0, 295px);
    -moz-transform: rotate3d(0, 1, 0, 90deg) translate3d(0, 0, 295px);
    transform: rotate3d(0, 1, 0, 90deg) translate3d(0, 0, 295px);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.bk-list li .bk-left {
    height: 330px;
    -webkit-transform: rotate3d(0, 1, 0, -90deg);
    transform: rotate3d(0, 1, 0, -90deg);
}

.bk-list li .bk-top {
    -webkit-transform: rotate3d(1, 0, 0, 90deg);
    transform: rotate3d(1, 0, 0, 90deg);
}

.bk-list li .bk-bottom {
    -webkit-transform: rotate3d(1, 0, 0, -90deg) translate3d(0, 0, 390px);
    transform: rotate3d(1, 0, 0, -90deg) translate3d(0, 0, 390px);
}

/* Transform classes */

.bk-list li .bk-viewinside .bk-front {
    -webkit-transform: translate3d(0, 0, 20px) rotate3d(0, 1, 0, -160deg);
    transform: translate3d(0, 0, 20px) rotate3d(0, 1, 0, -160deg);
}

.bk-list li .bk-book.bk-viewinside {
    -webkit-transform: translate3d(0, 0, 150px) rotate3d(0, 1, 0, 0deg);
    transform: translate3d(0, 0, 150px) rotate3d(0, 1, 0, 0deg);
}

.bk-list li .bk-book.bk-viewback {
    -webkit-transform: translate3d(0, 0, 0px) rotate3d(0, 1, 0, 180deg);
    transform: translate3d(0, 0, 0px) rotate3d(0, 1, 0, 180deg);
}

/* Main colors and content */

.bk-list li .bk-page,
.bk-list li .bk-right,
.bk-list li .bk-top,
.bk-list li .bk-bottom {
    background-color: #f5f5f5;
}

.bk-list li .bk-front>div {
    border-radius: 0 3px 3px 0;
    box-shadow:
        inset 4px 0 10px rgba(0, 0, 0, 0.1);
}

.bk-list li .bk-front:after {
    content: '';
    position: absolute;
    top: 1px;
    bottom: 1px;
    left: -1px;
    width: 1px;
}

.bk-list li .bk-cover:after,
.bk-list li .bk-back:after {
    content: '';
    position: absolute;
    top: 0;
    left: 10px;
    bottom: 0;
    width: 3px;
    background: rgba(0, 0, 0, 0.06);
    box-shadow: 1px 0 3px rgba(255, 255, 255, 0.1);
}

.bk-list li .bk-back:after {
    left: auto;
    right: 10px;
}

.bk-left h2 {
    width: 200px;
    height: 40px;
    -webkit-transform-origin: 0 0;
    -moz-transform-origin: 0 0;
    transform-origin: 0 0;
    -webkit-transform: rotate(90deg) translateY(-40px);
    transform: rotate(90deg) translateY(-40px);
}

.bk-content {
    position: absolute;
    top: 50px;
    left: 20px;
    bottom: 20px;
    right: 20px;
    padding: 0 0 10px;
    overflow: hidden;
    background: #f5f5f5;
    opacity: 0;
    pointer-events: none;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    -webkit-transition: opacity 0.3s ease-in-out;
    transition: opacity 0.3s ease-in-out;
    cursor: default;
}

.bk-content-current {
    opacity: 1;
    pointer-events: auto;
}

.bk-content p {
    padding: 0 0 10px;
    -webkit-font-smoothing: antialiased;
    color: #000;
    font-size: 13px;
    line-height: 20px;
    text-align: justify;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.bk-page nav {
    display: block;
    text-align: center;
    margin-top: 20px;
    position: relative;
    z-index: 100;
    cursor: pointer;
}

.bk-page nav span {
    display: inline-block;
    width: 20px;
    height: 20px;
    color: #aaa;
    background: #f0f0f0;
    border-radius: 50%;
}

/* Individual style & artwork */

/* Book 1 */
.bk-front>div,
.bk-back,
.bk-left,
.bk-cover-back,
.bk-front:after {
    background-color: var(--bg-color);

}

.bk-cover img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.bk-cover h2 {
    position: absolute;
    bottom: 0;
    right: 0;
    left: 0;
    padding: 30px;
    background: rgba(80, 79, 79, 0.432);
    color: #fff;
    text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.1);
}

.bk-cover h2 span:first-child,
.bk-left h2 span:first-child {
    text-transform: uppercase;
    font-weight: 700;
    font-size: 17px;

}

.bk-cover h2 span:first-child {
    display: block;
}

.bk-left h2 {
    color: #fff;
    font-size: 15px;
    line-height: 40px;
    padding-right: 10px;
    text-align: right;
}

.bk-back p {
    color: #fff;
    font-size: 20px;
    padding: 40px;
    text-align: center;
    font-weight: 700;
}

/* CSS */
.button-85 {
    padding: 0.6em 2em;
    border: none;
    outline: none;
    cursor: pointer;
    position: relative;
    z-index: 0;
    border-radius: 10px;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
    color: rgb(0, 0, 0);
    font-weight: bold;
    text-decoration: none;
    background-color: #e3fcea;
}

.button-85:hover {
    color: black;
}

.button-85:before {
    content: "";
    background: linear-gradient(45deg,
            #ff0000,
            #ff7300,
            #fffb00,
            #48ff00,
            #00ffd5,
            #002bff,
            #7a00ff,
            #ff00c8,
            #ff0000);
    position: absolute;
    top: -2px;
    left: -2px;
    background-size: 400%;
    z-index: -1;
    filter: blur(5px);
    -webkit-filter: blur(5px);
    width: calc(100% + 4px);
    height: calc(100% + 4px);
    animation: glowing-button-85 20s linear infinite;
    transition: opacity 0.3s ease-in-out;
    border-radius: 10px;
}

@keyframes glowing-button-85 {
    0% {
        background-position: 0 0;
    }

    50% {
        background-position: 400% 0;
    }

    100% {
        background-position: 0 0;
    }
}

.button-85:after {
    z-index: -1;
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background: #222;
    left: 0;
    top: 0;
    border-radius: 10px;
}


/* CSS */
.button-33 {
  background-color: #c2fbd7;
  border-radius: 100px;
  box-shadow: rgba(44, 187, 99, .2) 0 -25px 18px -14px inset,rgba(44, 187, 99, .15) 0 1px 2px,rgba(44, 187, 99, .15) 0 2px 4px,rgba(44, 187, 99, .15) 0 4px 8px,rgba(44, 187, 99, .15) 0 8px 16px,rgba(44, 187, 99, .15) 0 16px 32px;
  color: green;
  cursor: pointer;
  display: inline-block;
  font-family: CerebriSans-Regular,-apple-system,system-ui,Roboto,sans-serif;
  padding: 7px 20px;
  text-align: center;
  text-decoration: none;
  transition: all 250ms;
  border: 0;
  font-size: 16px;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}

.button-33:hover {
  box-shadow: rgba(44,187,99,.35) 0 -25px 18px -14px inset,rgba(44,187,99,.25) 0 1px 2px,rgba(44,187,99,.25) 0 2px 4px,rgba(44,187,99,.25) 0 4px 8px,rgba(44,187,99,.25) 0 8px 16px,rgba(44,187,99,.25) 0 16px 32px;
  transform: scale(1.05) rotate(-1deg);
}