.book .book-summary .book-search {
    padding: 6px;
    background: transparent;
    position: absolute;
    top: -50px;
    left: 0px;
    right: 0px;
    transition: top 0.5s ease;
}

.book .book-summary .book-search input,
.book .book-summary .book-search input:focus,
.book .book-summary .book-search input:hover {
    width: 100%;
    background: transparent;
    border: 1px solid #ccc;
    box-shadow: none;
    outline: none;
    line-height: 22px;
    padding: 7px 4px;
    color: inherit;
    box-sizing: border-box;
}

.book.with-search .book-summary .book-search {
    top: 0px;
}

.book.with-search .book-summary ul.summary {
    top: 50px;
}

.with-search .summary li[data-level] a[href*=".html#"] {
    display: none;
}