.book-content__header{padding:8px 16px;height:48px;display:flex;justify-content:flex-start;align-items:center;border-bottom:1px solid;border-color:var(--dividers_low_contrast)!important}.book-content__header .r-icon{width:auto}.book-content__header div{margin-right:8px}.book-content__header div:last-child{margin-right:0}.book-content__header-controls{display:flex;align-items:center;margin-left:auto}