.book-content{border-radius:12px;border:1px solid hsla(0,0%,100%,.1);background:rgba(18,18,20,.8);box-shadow:0 8px 32px 0 rgba(0,0,0,.5);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);opacity:0;transition:opacity .2s linear}.book-content:hover{opacity:1}