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我目前使用skel框架为我的基本网站。我需要让导航进入多级导航（下拉菜单）。有内置功能还是需要包含一些插件？使用我目前的设置，单级导航运行良好，但是当我嵌套UL标签时，它会打破页面。Skel框架多级/下拉导航
/* skel-baseline v2.0.3 | (c) n33 | getskel.com | MIT licensed */
(function($) {
\t skel.init({
\t \t reset: 'full',
\t \t breakpoints: {
\t \t \t global: {
\t \t \t \t href: 'assets/css/style.css',
\t \t \t \t containers: 1400,
\t \t \t \t grid: { gutters: ['40px', 0] }
\t \t \t },
\t \t \t xlarge: {
\t \t \t \t media: '(max-width: 1680px)',
\t \t \t \t href: 'assets/css/style-xlarge.css',
\t \t \t \t containers: 1200
\t \t \t },
\t \t \t large: {
\t \t \t \t media: '(max-width: 1280px)',
\t \t \t \t href: 'assets/css/style-large.css',
\t \t \t \t containers: 960,
\t \t \t \t grid: { gutters: ['40px', 0] },
\t \t \t \t viewport: { scalable: false }
\t \t \t },
\t \t \t medium: {
\t \t \t \t media: '(max-width: 980px)',
\t \t \t \t href: 'assets/css/style-medium.css',
\t \t \t \t containers: '90%'
\t \t \t },
\t \t \t small: {
\t \t \t \t media: '(max-width: 736px)',
\t \t \t \t href: 'assets/css/style-small.css',
\t \t \t \t containers: '90%',
\t \t \t \t grid: { gutters: ['40px', 0] }
\t \t \t },
\t \t \t xsmall: {
\t \t \t \t media: '(max-width: 480px)',
\t \t \t \t href: 'assets/css/style-xsmall.css'
\t \t \t }
\t \t },
\t \t plugins: {
\t \t \t layers: {
\t \t \t \t config: {
\t \t \t \t \t mode: 'transform'
\t \t \t \t },
\t \t \t \t navPanel: {
\t \t \t \t \t animation: 'pushX',
\t \t \t \t \t breakpoints: 'medium',
\t \t \t \t \t clickToHide: true,
\t \t \t \t \t height: '100%',
\t \t \t \t \t hidden: true,
\t \t \t \t \t html: '<div data-action="moveElement" data-args="nav"></div>',
\t \t \t \t \t orientation: 'vertical',
\t \t \t \t \t position: 'top-right',
\t \t \t \t \t side: 'right',
\t \t \t \t \t width: 250
\t \t \t \t },
\t \t \t \t navButton: {
\t \t \t \t \t breakpoints: 'medium',
\t \t \t \t \t height: '4em',
\t \t \t \t \t html: '<span class="toggle" data-action="toggleLayer" data-args="navPanel"></span>',
\t \t \t \t \t position: 'top-right',
\t \t \t \t \t side: 'top',
\t \t \t \t \t width: '6em'
\t \t \t \t }
\t \t \t }
\t \t }
\t });
\t $(function() {
\t \t var \t $window = $(window),
\t \t \t $body = $('body');
\t \t // Disable animations/transitions until the page has loaded.
\t \t \t $body.addClass('is-loading');
\t \t \t $window.on('load', function() {
\t \t \t \t $body.removeClass('is-loading');
\t \t \t });
\t });
})(jQuery);/* skel-baseline v2.0.3 | (c) n33 | getskel.com | MIT licensed */
/* Resets (http://meyerweb.com/eric/tools/css/reset/ | v2.0 | 20110126 | License: none (public domain)) */
\t html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,embed,figure,figcaption,footer,header,hgroup,menu,nav,output,ruby,section,summary,time,mark,audio,video{margin:0;padding:0;border:0;font-size:100%;font:inherit;vertical-align:baseline;}article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section{display:block;}body{line-height:1;}ol,ul{list-style:none;}blockquote,q{quotes:none;}blockquote:before,blockquote:after,q:before,q:after{content:'';content:none;}table{border-collapse:collapse;border-spacing:0;}body{-webkit-text-size-adjust:none}
/* Box Model */
\t *, *:before, *:after {
\t \t -moz-box-sizing: border-box;
\t \t -webkit-box-sizing: border-box;
\t \t box-sizing: border-box;
\t }
/* Container */
\t .container {
\t \t margin-left: auto;
\t \t margin-right: auto;
\t \t /* width: (containers) */
\t \t width: 1200px;
\t }
\t /* Modifiers */
\t \t /* 125% */
\t \t \t .container.\31 25\25 {
\t \t \t \t width: 100%;
\t \t \t \t /* max-width: (containers * 1.25) */
\t \t \t \t max-width: 1500px;
\t \t \t \t /* min-width: (containers) */
\t \t \t \t min-width: 1200px;
\t \t \t }
\t \t /* 75% */
\t \t \t .container.\37 5\25 {
\t \t \t \t /* width: (containers * 0.75) */
\t \t \t \t width: 900px;
\t \t \t }
\t \t /* 50% */
\t \t \t .container.\35 0\25 {
\t \t \t \t /* width: (containers * 0.50) */
\t \t \t \t width: 600px;
\t \t \t }
\t \t /* 25% */
\t \t \t .container.\32 5\25 {
\t \t \t \t /* width: (containers * 0.25) */
\t \t \t \t width: 300px;
\t \t \t }
/* Grid */
\t .row {
\t \t border-bottom: solid 1px transparent;
\t }
\t .row > * {
\t \t float: left;
\t }
\t .row:after, .row:before {
\t \t content: '';
\t \t display: block;
\t \t clear: both;
\t \t height: 0;
\t }
\t .row.uniform > * > :first-child {
\t \t margin-top: 0;
\t }
\t .row.uniform > * > :last-child {
\t \t margin-bottom: 0;
\t }
\t /* Gutters */
\t \t /* Normal */
\t \t \t .row > * {
\t \t \t \t /* padding: (gutters.horizontal) 0 0 (gutters.vertical) */
\t \t \t \t padding: 0 0 0 2em;
\t \t \t }
\t \t \t .row {
\t \t \t \t /* margin: -(gutters.horizontal) 0 -1px -(gutters.vertical) */
\t \t \t \t margin: 0 0 -1px -2em;
\t \t \t }
\t \t \t .row.uniform > * {
\t \t \t \t /* padding: (gutters.vertical) 0 0 (gutters.vertical) */
\t \t \t \t padding: 2em 0 0 2em;
\t \t \t }
\t \t \t .row.uniform {
\t \t \t \t /* margin: -(gutters.vertical) 0 -1px -(gutters.vertical) */
\t \t \t \t margin: -2em 0 -1px -2em;
\t \t \t }
\t \t /* 200% */
\t \t \t .row.\32 00\25 > * {
\t \t \t \t /* padding: (gutters.horizontal) 0 0 (gutters.vertical) */
\t \t \t \t padding: 0 0 0 4em;
\t \t \t }
\t \t \t .row.\32 00\25 {
\t \t \t \t /* margin: -(gutters.horizontal) 0 -1px -(gutters.vertical) */
\t \t \t \t margin: 0 0 -1px -4em;
\t \t \t }
\t \t \t .row.uniform.\32 00\25 > * {
\t \t \t \t /* padding: (gutters.vertical) 0 0 (gutters.vertical) */
\t \t \t \t padding: 4em 0 0 4em;
\t \t \t }
\t \t \t .row.uniform.\32 00\25 {
\t \t \t \t /* margin: -(gutters.vertical) 0 -1px -(gutters.vertical) */
\t \t \t \t margin: -4em 0 -1px -4em;
\t \t \t }
\t \t /* 150% */
\t \t \t .row.\31 50\25 > * {
\t \t \t \t /* padding: (gutters.horizontal) 0 0 (gutters.vertical) */
\t \t \t \t padding: 0 0 0 1.5em;
\t \t \t }
\t \t \t .row.\31 50\25 {
\t \t \t \t /* margin: -(gutters.horizontal) 0 -1px -(gutters.vertical) */
\t \t \t \t margin: 0 0 -1px -1.5em;
\t \t \t }
\t \t \t .row.uniform.\31 50\25 > * {
\t \t \t \t /* padding: (gutters.vertical) 0 0 (gutters.vertical) */
\t \t \t \t padding: 1.5em 0 0 1.5em;
\t \t \t }
\t \t \t .row.uniform.\31 50\25 {
\t \t \t \t /* margin: -(gutters.vertical) 0 -1px -(gutters.vertical) */
\t \t \t \t margin: -1.5em 0 -1px -1.5em;
\t \t \t }
\t \t /* 50% */
\t \t \t .row.\35 0\25 > * {
\t \t \t \t /* padding: (gutters.horizontal) 0 0 (gutters.vertical) */
\t \t \t \t padding: 0 0 0 1em;
\t \t \t }
\t \t \t .row.\35 0\25 {
\t \t \t \t /* margin: -(gutters.horizontal) 0 -1px -(gutters.vertical) */
\t \t \t \t margin: 0 0 -1px -1em;
\t \t \t }
\t \t \t .row.uniform.\35 0\25 > * {
\t \t \t \t /* padding: (gutters.vertical) 0 0 (gutters.vertical) */
\t \t \t \t padding: 1em 0 0 1em;
\t \t \t }
\t \t \t .row.uniform.\35 0\25 {
\t \t \t \t /* margin: -(gutters.vertical) 0 -1px -(gutters.vertical) */
\t \t \t \t margin: -1em 0 -1px -1em;
\t \t \t }
\t \t /* 25% */
\t \t \t .row.\32 5\25 > * {
\t \t \t \t /* padding: (gutters.horizontal) 0 0 (gutters.vertical) */
\t \t \t \t padding: 0 0 0 0.5em;
\t \t \t }
\t \t \t .row.\32 5\25 {
\t \t \t \t /* margin: -(gutters.horizontal) 0 -1px -(gutters.vertical) */
\t \t \t \t margin: 0 0 -1px -0.5em;
\t \t \t }
\t \t \t .row.uniform.\32 5\25 > * {
\t \t \t \t /* padding: (gutters.vertical) 0 0 (gutters.vertical) */
\t \t \t \t padding: 0.5em 0 0 0.5em;
\t \t \t }
\t \t \t .row.uniform.\32 5\25 {
\t \t \t \t /* margin: -(gutters.vertical) 0 -1px -(gutters.vertical) */
\t \t \t \t margin: -0.5em 0 -1px -0.5em;
\t \t \t }
\t \t /* 0% */
\t \t \t .row.\30 \25 > * {
\t \t \t \t padding: 0;
\t \t \t }
\t \t \t .row.\30 \25 {
\t \t \t \t margin: 0 0 -1px 0;
\t \t \t }
\t /* Cells */
\t \t .\31 2u, .\31 2u\24 { width: 100%; clear: none; margin-left: 0; }
\t \t .\31 1u, .\31 1u\24 { width: 91.6666666667%; clear: none; margin-left: 0; }
\t \t .\31 0u, .\31 0u\24 { width: 83.3333333333%; clear: none; margin-left: 0; }
\t \t .\39 u, .\39 u\24 { width: 75%; clear: none; margin-left: 0; }
\t \t .\38 u, .\38 u\24 { width: 66.6666666667%; clear: none; margin-left: 0; }
\t \t .\37 u, .\37 u\24 { width: 58.3333333333%; clear: none; margin-left: 0; }
\t \t .\36 u, .\36 u\24 { width: 50%; clear: none; margin-left: 0; }
\t \t .\35 u, .\35 u\24 { width: 41.6666666667%; clear: none; margin-left: 0; }
\t \t .\34 u, .\34 u\24 { width: 33.3333333333%; clear: none; margin-left: 0; }
\t \t .\33 u, .\33 u\24 { width: 25%; clear: none; margin-left: 0; }
\t \t .\32 u, .\32 u\24 { width: 16.6666666667%; clear: none; margin-left: 0; }
\t \t .\31 u, .\31 u\24 { width: 8.3333333333%; clear: none; margin-left: 0; }
\t \t .\31 2u\24 + *,
\t \t .\31 1u\24 + *,
\t \t .\31 0u\24 + *,
\t \t .\39 u\24 + *,
\t \t .\38 u\24 + *,
\t \t .\37 u\24 + *,
\t \t .\36 u\24 + *,
\t \t .\35 u\24 + *,
\t \t .\34 u\24 + *,
\t \t .\33 u\24 + *,
\t \t .\32 u\24 + *,
\t \t .\31 u\24 + * {
\t \t \t clear: left;
\t \t }
\t \t .\-11u { margin-left: 91.6666666667% }
\t \t .\-10u { margin-left: 83.3333333333% }
\t \t .\-9u { margin-left: 75% }
\t \t .\-8u { margin-left: 66.6666666667% }
\t \t .\-7u { margin-left: 58.3333333333% }
\t \t .\-6u { margin-left: 50% }
\t \t .\-5u { margin-left: 41.6666666667% }
\t \t .\-4u { margin-left: 33.3333333333% }
\t \t .\-3u { margin-left: 25% }
\t \t .\-2u { margin-left: 16.6666666667% }
\t \t .\-1u { margin-left: 8.3333333333% }<nav id="nav">
\t \t \t \t \t <ul>
\t \t \t \t \t \t <li><a href="#top">Top</a></li>
\t \t \t \t \t \t <li><a href="#content">Content</a></li>
\t \t \t \t \t \t <li><a href="#elements">Elements</a>
<ul><li>Link 1</li><li>link 2</li><li>Link 3</li></ul>
\t \t \t \t \t \t </li>
\t \t \t \t \t \t <li><a href="#grid">Grid System</a></li>
\t \t \t \t \t \t <li><a href="http://getskel.com" class="button special">Download</a></li>
\t \t \t \t \t </ul>
\t \t \t \t </nav>