.flatbook{place-items:center;display:grid;position:absolute;inset:0}.flatbook__spread{transition:opacity var(--dur-panel) var(--ease-standard);grid-area:1/1;display:flex;position:relative}.flatbook__spread.is-entering,.flatbook__spread.is-leaving{opacity:0}.flatbook__spread.is-cover{transform:translate(50%)}.flatbook__spread.is-single.is-cover{transform:none}.flatbook img{background:var(--paper-raised);cursor:pointer;-webkit-user-select:none;user-select:none;height:auto;display:block;box-shadow:0 2px 6px #00000040,0 18px 40px #0000004d}.flatbook__spread:not(.is-single):after{content:"";pointer-events:none;background:linear-gradient(90deg,#0000,#00000024 48%,#0003 50%,#0000001a 52%,#0000);position:absolute;inset:0 calc(50% - 24px)}