* {
    outline: none;
}

.bk-list {
    /* Vertical */
    --bookHeight: calc(380px);
    --bookWidth: calc(234px);
    /* Horizontal */
    /*    --bookWidth : calc(280px);
    --bookHeight : calc(200px);*/
    --bookTickness: 10px;
    --bookTicknessDouble: calc(var(--bookTickness) * 2);
    --bookTicknessNegative: calc(var(--bookTickness) - var(--bookTicknessDouble));
    --bookPageTransform: calc(var(--bookTickness) / 2);
    --bookPagePosition: calc(--bookPageTransform - 1);
}

.bk-list {
    list-style: none;
    position: relative;
    display: flex;
    justify-content: center;
    margin: 0;
    padding: 0;
    width: 100%;
}

.bk-title {
    width: 100%;
}

.bk-list li {
    position: relative;
    width: var(--bookWidth);
    float: left;
    z-index: 1;
    margin: 0px 50px 40px 0;
    -webkit-perspective: 1800px;
    perspective: 1800px;
}

.bk-list li:last-child {
    margin-right: 0;
}

.bk-info {
    position: relative;
    max-width: 90%;
    margin-left:auto;
    margin-right:auto;
}

.bk-info h3 {
    border-bottom: 1px solid rgba(0, 0, 0, 0.3);
    font-size: 26px;
    margin: 1rem 0 0 0;
}

.bk-info h3 span:first-child {
    font-size: 14px;
    font-weight: 400;
    text-transform: uppercase;
    padding-bottom: 5px;
    display: block;
    color: #777;
}

.bk-info p {
    color: #444;
}

.bk-info button {
    border: none;
    padding: 3px 15px;
    font-weight: 700;
    font-size: 14px;
    text-transform: uppercase;
    cursor: pointer;
    margin-right: 4px;
    font-size: 0;
}

.bk-bookback i,
.bk-bookview i {
    font-size: 0.85rem;
    color: rgba(0, 0, 0, 0.2);
}

.bk-bookback,
.bk-bookview {
    background: transparent;
}

.bk-active i {
    color: #4a4a4a;
}

.bk-btnList {
    display: none;
    justify-content: space-between;
    padding: 0 0.5rem;
}

.bk-bookback:hover,
.bk-bookview:hover,
{
    background: rgba(0, 0, 0, 0.15);
}

.bk-list li .bk-book {
    width: 100%;
    height: var(--bookHeight);
    -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.bk-bookdefault {
    -webkit-transform: rotate3d(0, 1, 0, 15deg);
    transform: rotate3d(0, 1, 0, 15deg);
}

.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, var(--bookPageTransform));
    transform: translate3d(0, 0, var(--bookPageTransform));
    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, var(--bookPagePosition));
    transform: translate3d(0, 0, var(--bookPagePosition));
    display: none;
    width: calc( var(--bookWidth) - 5px);
    height: calc(var(--bookHeight) - 0.9rem);
    top: 0.65rem;
    left: 1px;
    -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: var(--bookWidth);
    height: var(--bookHeight);
}

.bk-list li .bk-left,
.bk-list li .bk-right {
    width: var(--bookTickness);
    left: calc(var(--bookTicknessNegative) / 2);
}

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

.bk-list li .bk-back {
    -webkit-transform: rotate3d(0, 1, 0, -180deg) translate3d(0, 0, var(--bookPageTransform));
    transform: rotate3d(0, 1, 0, -180deg) translate3d(0, 0, var(--bookPageTransform));
    box-shadow: 10px 10px 30px rgba(0, 0, 0, 0.3);
    border-radius: 3px 0 0 3px;
}

.bk-list li .bk-cover-back {
    background-color: #838383;
    -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: var(--bookHeight);
    -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, var(--bookPageTransform)) rotate3d(0, 1, 0, -160deg);
    transform: translate3d(0, 0, var(--bookPageTransform)) 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: #fff;
}

.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: var(--bookHeight);
    height: var(--bookTickness);
    -webkit-transform-origin: 0 0;
    -moz-transform-origin: 0 0;
    transform-origin: 0 0;
    -webkit-transform: rotate(90deg) translateY(var(--bookTicknessNegative));
    transform: rotate(90deg) translateY(var(--bookTicknessNegative));
}

.bk-content {
    position: absolute;
    top: 30px;
    left: 20px;
    bottom: 20px;
    right: 20px;
    padding: 0.5rem;
    overflow: hidden;
    background: #fff;
    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: 11px;
    line-height: 13px;
    text-align: left;
    -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:after {
    background-color: rgba(0, 0, 0, 0.42);
}

.bk-front > div,
.bk-back,
.bk-left {
    background-color: rgb(191, 191, 191);
    transition: background ease 2s;
}

.bk-left {
    overflow: hidden !important;
}

.bk-cover {
    display: flex !important;
    align-items: center;
    justify-content: center;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    overflow: hidden;
}

.bk-cover img {
    position: absolute;
    min-width: 100%;
    width: auto;
    min-height: 100%;
    margin: auto;
    opacity: 1;
}

.bk-cover h2 {
    position: absolute;
    bottom: 0;
    right: 0;
    left: 0;
    padding: 30px;
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.1);
     overflow: hidden;
}

.bk-cover h2 span:first-child,
.bk-left h2 span:first-child {
    text-transform: uppercase;
    font-weight: 400;
    font-size: 13px;
    padding-right: 20px;
}

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

.bk-cover h2 span:last-child,
.bk-left h2 span:last-child {
    /*font-family: "Big Caslon", "Book Antiqua", "Palatino Linotype", Georgia, serif;*/
}

.bk-content p {
    font-family:'Roboto', serif;
}

.bk-left h2 {
    color: #fff;
    font-size: 12px;
    line-height: var(--bookTickness);
    padding-right: 10px;
    text-align: center;
}

.bk-back p {
    color: #fff;
    font-size: 13px;
    padding: 40px;
    text-align: center;
    font-weight: 700;
    margin: 0;
}


/* Fallbacks */

.no-csstransforms3d .bk-list li .bk-book > div,
.no-csstransforms3d .bk-list li .bk-book .bk-cover-back {
    display: none;
}

.no-csstransforms3d .bk-list li .bk-book > div.bk-front {
    display: block;
}

.no-csstransforms3d .bk-info button,
.no-js .bk-info button {
    display: none;
}

    .bk-category {
        position: absolute;
        top:0;
        right:0;
        z-index: 1;
        padding:0.25 0.5rem;
        font-size: 0.9rem;
    }
    .bk-category a{
        color:white;
        text-decoration: none;
        background:rgba(0, 0, 0, 0.74);
        padding:0.5rem 1rem;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .bk-category a:hover{
        color:white;
        text-decoration: none;
        background:rgba(51, 51, 51, 0.74);
    }
    
    .bk-info-card{
        width:100%;
        display: flex;
        flex-wrap: wrap;
        bottom:0;
        background:rgba(39, 33, 33, 1);
        padding:1rem 0.5rem;
        background: rgb(2, 0, 36);
        background: linear-gradient( 180deg, rgba(2, 0, 36, 0) 0%, rgba(0, 0, 0, 0.8) 35%, rgba(0, 0, 0, 0.8) 100%);
        padding-top: 4rem;
}    
    .bk-info-card a{
        font-size: 1.2rem;
        font-weight: 700;
        line-height: 1.8rem;
        z-index: 1;
        align-items: flex-end;
        justify-content: center;
        text-decoration: none;
        color:rgba(255, 255, 255, 1);
    } 
    .bk-info-card a:hover{
        color:#fff;
    }