2020-05-20 14:35:05 +00:00
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<#--
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Bolo - A stable and beautiful blogging system based in Solo.
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Copyright (c) 2020, https://github.com/adlered
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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-->
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<div>
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<div id="toc"></div>
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</div>
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2020-08-25 15:00:31 +00:00
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<script src="https://www.zeekling.cn/cdn/js/jquery-3.4.1.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script>
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2020-05-20 14:35:05 +00:00
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<script>
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// initToc()
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// function initToc() {
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// var toc = $(".post-article ul").first();
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// $("#toc").html(toc);
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// initRelationship()
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// tocFixed()
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// }
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$(document).ready(function () {
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$('#toc').html('');
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var postDirectoryBuild = function () {
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var postChildren = function children(childNodes, reg) {
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var result = [],
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isReg = typeof reg === 'object',
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isStr = typeof reg === 'string',
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node, i, len;
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for (i = 0, len = childNodes.length; i < len; i++) {
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node = childNodes[i];
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if ((node.nodeType === 1 || node.nodeType === 9) &&
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(!reg ||
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isReg && reg.test(node.tagName.toLowerCase()) ||
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isStr && node.tagName.toLowerCase() === reg)) {
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result.push(node);
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}
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}
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return result;
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},
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createPostDirectory = function (article, directory, isDirNum) {
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var contentArr = [],
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titleId = [],
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levelArr, root, level,
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currentList, list, li, link, i, len;
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levelArr = (function (article, contentArr, titleId) {
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var titleElem = postChildren(article.childNodes, /^h\d$/),
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levelArr = [],
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lastNum = 1,
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lastRevNum = 1,
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count = 0,
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guid = 1,
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id = 'directory' + (Math.random() + '').replace(/\D/, ''),
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lastRevNum, num, elem;
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while (titleElem.length) {
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elem = titleElem.shift();
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contentArr.push(elem.innerHTML);
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num = +elem.tagName.match(/\d/)[0];
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if (num > lastNum) {
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levelArr.push(1);
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lastRevNum += 1;
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} else if (num === lastRevNum ||
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num > lastRevNum && num <= lastNum) {
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levelArr.push(0);
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lastRevNum = lastRevNum;
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} else if (num < lastRevNum) {
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levelArr.push(num - lastRevNum);
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lastRevNum = num;
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}
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count += levelArr[levelArr.length - 1];
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lastNum = num;
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elem.id = elem.id || (id + guid++);
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titleId.push(elem.id);
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}
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if (count !== 0 && levelArr[0] === 1) levelArr[0] = 0;
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return levelArr;
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})(article, contentArr, titleId);
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currentList = root = document.createElement('ul');
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dirNum = [0];
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for (i = 0, len = levelArr.length; i < len; i++) {
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level = levelArr[i];
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if (level === 1) {
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list = document.createElement('ul');
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if (!currentList.lastElementChild) {
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currentList.appendChild(document.createElement('li'));
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}
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currentList.lastElementChild.appendChild(list);
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currentList = list;
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dirNum.push(0);
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} else if (level < 0) {
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level *= 2;
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while (level++) {
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if (level % 2) dirNum.pop();
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currentList = currentList.parentNode;
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}
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}
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dirNum[dirNum.length - 1]++;
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li = document.createElement('li');
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link = document.createElement('a');
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link.href = '#' + titleId[i];
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link.innerHTML = !isDirNum ? contentArr[i] :
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dirNum.join('.') + ' ' + contentArr[i];
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li.appendChild(link);
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currentList.appendChild(li);
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}
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directory.appendChild(root);
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};
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createPostDirectory(document.getElementById('post-article'), document.getElementById('toc'), false);
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};
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//建立关联关系
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function initRelationship() {
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var win = $(window);
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var anchors = $('#toc').find('a');
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var offset = 200; //偏移量看情况调
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win.on('scroll', function () {
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var scrollTop = win.scrollTop();
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anchors.each(function (i, v) {
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var that = $(v);
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var id = that.attr('href');
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var target = $(id);
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if (scrollTop >= target.offset().top - offset) {
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anchors.removeClass('active');
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anchors.parent().removeClass("lit-active");
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that.addClass('active');
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that.parent().addClass("lit-active");
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}
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})
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})
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}
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postDirectoryBuild();
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initRelationship();
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var dir = $("#toc");
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var postdiv = $(".article-content");
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var offsetLength = dir.offset().top;
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$(document).scroll(function () {
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var distance = offsetLength - $(window).scrollTop();
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if (distance <= 0) {
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if (!dir.hasClass('directory-fixed')) {
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dir.addClass('directory-fixed');
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}
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} else if (distance > 0) {
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if (dir.hasClass('directory-fixed')) {
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dir.removeClass('directory-fixed');
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}
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}
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});
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});
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function initRelationship() {
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var win = $(window);
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var anchors = $('#toc').find('a');
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var offset = 200; //偏移量看情况调
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win.on('scroll', function () {
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var scrollTop = win.scrollTop();
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anchors.each(function (i, v) {
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var that = $(v);
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var id = that.attr('href');
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var target = $(id);
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if (scrollTop >= target.offset().top - offset) {
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anchors.removeClass('active');
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anchors.parent().removeClass("lit-active");
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that.addClass('active');
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that.parent().addClass("lit-active");
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}
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})
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})
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}
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function tocFixed() {
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var dir = $("#toc");
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var postdiv = $(".article-content");
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var offsetLength = dir.offset().top;
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$(document).scroll(function () {
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var distance = offsetLength - $(window).scrollTop();
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if (distance <= 0) {
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if (!dir.hasClass('directory-fixed')) {
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dir.addClass('directory-fixed');
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}
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} else if (distance > 0) {
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if (dir.hasClass('directory-fixed')) {
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dir.removeClass('directory-fixed');
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}
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}
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});
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}
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</script>
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<style>
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#toc {
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/*position: fixed;*/
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/*left: 44%;*/
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display: inline-block;
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text-align: left;
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margin-top: 20px;
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padding-bottom: 20px;
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/*width: 260px;*/
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/*margin-left: 330px;*/
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}
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.toc-fixed {
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position: fixed;
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z-index: 0;
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left: 50%;
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display: inline-block;
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text-align: left;
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width: 260px;
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top: 40px;
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}
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#toc > ul:before {
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content: "";
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position: absolute;
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top: 0;
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left: 0px;
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bottom: 0;
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width: 3px;
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opacity: .2;
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z-index: 1;
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}
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#toc li, #toc ul {
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margin: 0;
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padding-left: 0;
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list-style: none;
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padding-top: 0.3rem;
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}
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#toc > ul {
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position: relative;
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}
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#toc > ul li::before {
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position: relative;
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top: 0;
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left: -2px;
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display: inline-block;
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width: 7px;
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height: 7px;
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content: '';
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border-radius: 50%;
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z-index: 100;
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opacity: 0.5;
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vertical-align: middle;
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}
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#toc > ul > li:hover::before {
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opacity: 1;
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}
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.lit-active::before {
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opacity: 1 !important;
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}
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#toc > ul > li > a {
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font-weight: bold;
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}
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#toc ul li a {
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display: inline-table;
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white-space: -moz-pre-wrap;
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vertical-align: middle;
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}
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#toc ul li a {
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margin-left: -5px;
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white-space: nowrap;
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width: 200px;
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padding-left: 15px;
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display: inline-block;
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overflow: hidden;
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text-overflow: ellipsis;
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white-space: nowrap;
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}
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#toc ul li ul li a {
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margin-left: -15px;
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white-space: nowrap;
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width: 200px;
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padding-left: 30px;
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display: inline-block;
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overflow: hidden;
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text-overflow: ellipsis;
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white-space: nowrap;
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}
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#toc ul li ul li ul li a {
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display: inline-block;
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margin-left: -15px;
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padding-left: 35px;
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overflow: hidden;
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text-overflow: ellipsis;
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white-space: nowrap;
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width: 200px;
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}
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.directory-fixed {
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position: fixed;
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top: 0rem;
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}
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</style>
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