<p dir="auto">Incorrect z-index modal-backdrop.</p>
<p dir="auto">Example: <a href="http://jsfiddle.net/aUNr6/1/" rel="nofollow">http://jsfiddle.net/aUNr6/1/</a></p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://camo.githubusercontent.com/bf29b6dad35757eb1bc4b47aba42881d10c581502dd3063f7b5f451c7c0c516c/687474703a2f2f7331342e64697265637475706c6f61642e6e65742f696d616765732f3131313031302f35796375763964712e706e67"><img src="https://camo.githubusercontent.com/bf29b6dad35757eb1bc4b47aba42881d10c581502dd3063f7b5f451c7c0c516c/687474703a2f2f7331342e64697265637475706c6f61642e6e65742f696d616765732f3131313031302f35796375763964712e706e67" alt="" data-canonical-src="http://s14.directupload.net/images/111010/5ycuv9dq.png" style="max-width: 100%;"></a></p>
<p dir="auto">Unexpected empty space appears between two sections "Pictures" and "Videos".</p>
<p dir="auto"><strong>Browsers:</strong><br>
Google Chrome 16.0.899.0 dev<br>
Firefox 7.0.1</p>
<p dir="auto"><strong>Operating System:</strong><br>
Ubuntu Linux 11.04</p>
<p dir="auto"><strong>Code example:</strong></p>
<div class="highlight highlight-text-html-basic notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="&lt;!DOCTYPE html&gt;
&lt;html&gt;
    &lt;head&gt;
        &lt;title&gt;&lt;/title&gt;
        &lt;meta http-equiv=&quot;Content-Type&quot; content=&quot;text/html; charset=UTF-8&quot;&gt;
        &lt;link rel=&quot;stylesheet&quot; href=&quot;http://twitter.github.com/bootstrap/1.3.0/bootstrap.min.css&quot;&gt;
        &lt;style type=&quot;text/css&quot;&gt;
          body {
            padding-top: 20px;
          }
        &lt;/style&gt;
    &lt;/head&gt;
    &lt;body&gt;
        &lt;div class=&quot;container-fluid&quot;&gt;
            &lt;div class=&quot;sidebar&quot;&gt;
                &lt;div class=&quot;well&quot;&gt;
                    &lt;h5&gt;Sidebar&lt;/h5&gt;
                    &lt;div style=&quot;height:700px&quot;&gt;
                    &lt;/div&gt;
                &lt;/div&gt;
            &lt;/div&gt;
            &lt;div class=&quot;content&quot;&gt;
                &lt;h2&gt;Some title here&lt;/h2&gt;
                &lt;div style=&quot;margin:10px 0&quot;&gt;
                    &lt;a class=btn href=&quot;#&quot;&gt;Button 1&lt;/a&gt; 
                    &lt;a class=&quot;btn danger&quot; href=&quot;#&quot;&gt;Button 2&lt;/a&gt;
                &lt;/div&gt;
                &lt;ul class=tabs&gt;
                    &lt;li class=active&gt;&lt;a href=&quot;javascript:;&quot;&gt;Tab 1&lt;/a&gt;&lt;/li&gt;
                    &lt;li&gt;&lt;a href=&quot;javascript:;&quot;&gt;Tab 1&lt;/a&gt;&lt;/li&gt;
                    &lt;li&gt;&lt;a href=&quot;javascript:;&quot;&gt;Tab 1&lt;/a&gt;&lt;/li&gt;
                    &lt;li&gt;&lt;a href=&quot;javascript:;&quot;&gt;Tab 1&lt;/a&gt;&lt;/li&gt;
                &lt;/ul&gt;
                &lt;div style=&quot;margin:20px 5px;&quot;&gt;
                    &lt;h4&gt;Pictures&lt;/h4&gt;
                    &lt;ul class=&quot;media-grid&quot;&gt;
                        &lt;li&gt;
                            &lt;a href=&quot;javascript:;&quot;&gt;
                                &lt;img class=&quot;thumbnail&quot; src=&quot;http://placehold.it/210x150&quot; alt=&quot;&quot;&gt;
                            &lt;/a&gt;
                        &lt;/li&gt;
                        &lt;li&gt;
                            &lt;a href=&quot;javascript:;&quot;&gt;
                                &lt;img class=&quot;thumbnail&quot; src=&quot;http://placehold.it/210x150&quot; alt=&quot;&quot;&gt;
                            &lt;/a&gt;
                        &lt;/li&gt;
                        &lt;li&gt;
                            &lt;a href=&quot;javascript:;&quot;&gt;
                                &lt;img class=&quot;thumbnail&quot; src=&quot;http://placehold.it/210x150&quot; alt=&quot;&quot;&gt;
                            &lt;/a&gt;
                        &lt;/li&gt;
                        &lt;li&gt;
                            &lt;a href=&quot;javascript:;&quot;&gt;
                                &lt;img class=&quot;thumbnail&quot; src=&quot;http://placehold.it/210x150&quot; alt=&quot;&quot;&gt;
                            &lt;/a&gt;
                        &lt;/li&gt;
                        &lt;li&gt;
                            &lt;a href=&quot;javascript:;&quot;&gt;
                                &lt;img class=&quot;thumbnail&quot; src=&quot;http://placehold.it/210x150&quot; alt=&quot;&quot;&gt;
                            &lt;/a&gt;
                        &lt;/li&gt;
                    &lt;/ul&gt;                
                &lt;/div&gt;
                &lt;div style=&quot;margin:20px 5px;&quot;&gt;
                    &lt;h4&gt;Videos&lt;/h4&gt;
                    &lt;ul class=&quot;media-grid&quot;&gt;
                        &lt;li&gt;
                            &lt;a href=&quot;javascript:;&quot;&gt;
                                &lt;img class=&quot;thumbnail&quot; src=&quot;http://placehold.it/330x230&quot; alt=&quot;&quot;&gt;
                            &lt;/a&gt;
                        &lt;/li&gt;
                        &lt;li&gt;
                            &lt;a href=&quot;javascript:;&quot;&gt;
                                &lt;img class=&quot;thumbnail&quot; src=&quot;http://placehold.it/330x230&quot; alt=&quot;&quot;&gt;
                            &lt;/a&gt;
                        &lt;/li&gt;
                    &lt;/ul&gt;
                &lt;/div&gt;
            &lt;/div&gt;
        &lt;/div&gt;
    &lt;/body&gt;
&lt;/html&gt;"><pre class="notranslate"><span class="pl-c1">&lt;!DOCTYPE html<span class="pl-kos">&gt;</span></span>
<span class="pl-kos">&lt;</span><span class="pl-ent">html</span><span class="pl-kos">&gt;</span>
    <span class="pl-kos">&lt;</span><span class="pl-ent">head</span><span class="pl-kos">&gt;</span>
        <span class="pl-kos">&lt;</span><span class="pl-ent">title</span><span class="pl-kos">&gt;</span><span class="pl-kos">&lt;/</span><span class="pl-ent">title</span><span class="pl-kos">&gt;</span>
        <span class="pl-kos">&lt;</span><span class="pl-ent">meta</span> <span class="pl-c1">http-equiv</span>="<span class="pl-s">Content-Type</span>" <span class="pl-c1">content</span>="<span class="pl-s">text/html; charset=UTF-8</span>"<span class="pl-kos">&gt;</span>
        <span class="pl-kos">&lt;</span><span class="pl-ent">link</span> <span class="pl-c1">rel</span>="<span class="pl-s">stylesheet</span>" <span class="pl-c1">href</span>="<span class="pl-s">http://twitter.github.com/bootstrap/1.3.0/bootstrap.min.css</span>"<span class="pl-kos">&gt;</span>
        <span class="pl-kos">&lt;</span><span class="pl-ent">style</span> <span class="pl-c1">type</span>="<span class="pl-s">text/css</span>"<span class="pl-kos">&gt;</span>
          <span class="pl-ent">body</span> {
            <span class="pl-c1">padding-top</span><span class="pl-kos">:</span> <span class="pl-c1">20<span class="pl-smi">px</span></span>;
          }
        <span class="pl-kos">&lt;/</span><span class="pl-ent">style</span><span class="pl-kos">&gt;</span>
    <span class="pl-kos">&lt;/</span><span class="pl-ent">head</span><span class="pl-kos">&gt;</span>
    <span class="pl-kos">&lt;</span><span class="pl-ent">body</span><span class="pl-kos">&gt;</span>
        <span class="pl-kos">&lt;</span><span class="pl-ent">div</span> <span class="pl-c1">class</span>="<span class="pl-s">container-fluid</span>"<span class="pl-kos">&gt;</span>
            <span class="pl-kos">&lt;</span><span class="pl-ent">div</span> <span class="pl-c1">class</span>="<span class="pl-s">sidebar</span>"<span class="pl-kos">&gt;</span>
                <span class="pl-kos">&lt;</span><span class="pl-ent">div</span> <span class="pl-c1">class</span>="<span class="pl-s">well</span>"<span class="pl-kos">&gt;</span>
                    <span class="pl-kos">&lt;</span><span class="pl-ent">h5</span><span class="pl-kos">&gt;</span>Sidebar<span class="pl-kos">&lt;/</span><span class="pl-ent">h5</span><span class="pl-kos">&gt;</span>
                    <span class="pl-kos">&lt;</span><span class="pl-ent">div</span> <span class="pl-c1">style</span>="<span class="pl-s">height:700px</span>"<span class="pl-kos">&gt;</span>
                    <span class="pl-kos">&lt;/</span><span class="pl-ent">div</span><span class="pl-kos">&gt;</span>
                <span class="pl-kos">&lt;/</span><span class="pl-ent">div</span><span class="pl-kos">&gt;</span>
            <span class="pl-kos">&lt;/</span><span class="pl-ent">div</span><span class="pl-kos">&gt;</span>
            <span class="pl-kos">&lt;</span><span class="pl-ent">div</span> <span class="pl-c1">class</span>="<span class="pl-s">content</span>"<span class="pl-kos">&gt;</span>
                <span class="pl-kos">&lt;</span><span class="pl-ent">h2</span><span class="pl-kos">&gt;</span>Some title here<span class="pl-kos">&lt;/</span><span class="pl-ent">h2</span><span class="pl-kos">&gt;</span>
                <span class="pl-kos">&lt;</span><span class="pl-ent">div</span> <span class="pl-c1">style</span>="<span class="pl-s">margin:10px 0</span>"<span class="pl-kos">&gt;</span>
                    <span class="pl-kos">&lt;</span><span class="pl-ent">a</span> <span class="pl-c1">class</span>=<span class="pl-s">btn</span> <span class="pl-c1">href</span>="<span class="pl-s">#</span>"<span class="pl-kos">&gt;</span>Button 1<span class="pl-kos">&lt;/</span><span class="pl-ent">a</span><span class="pl-kos">&gt;</span> 
                    <span class="pl-kos">&lt;</span><span class="pl-ent">a</span> <span class="pl-c1">class</span>="<span class="pl-s">btn danger</span>" <span class="pl-c1">href</span>="<span class="pl-s">#</span>"<span class="pl-kos">&gt;</span>Button 2<span class="pl-kos">&lt;/</span><span class="pl-ent">a</span><span class="pl-kos">&gt;</span>
                <span class="pl-kos">&lt;/</span><span class="pl-ent">div</span><span class="pl-kos">&gt;</span>
                <span class="pl-kos">&lt;</span><span class="pl-ent">ul</span> <span class="pl-c1">class</span>=<span class="pl-s">tabs</span><span class="pl-kos">&gt;</span>
                    <span class="pl-kos">&lt;</span><span class="pl-ent">li</span> <span class="pl-c1">class</span>=<span class="pl-s">active</span><span class="pl-kos">&gt;</span><span class="pl-kos">&lt;</span><span class="pl-ent">a</span> <span class="pl-c1">href</span>="<span class="pl-s">javascript:;</span>"<span class="pl-kos">&gt;</span>Tab 1<span class="pl-kos">&lt;/</span><span class="pl-ent">a</span><span class="pl-kos">&gt;</span><span class="pl-kos">&lt;/</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                    <span class="pl-kos">&lt;</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span><span class="pl-kos">&lt;</span><span class="pl-ent">a</span> <span class="pl-c1">href</span>="<span class="pl-s">javascript:;</span>"<span class="pl-kos">&gt;</span>Tab 1<span class="pl-kos">&lt;/</span><span class="pl-ent">a</span><span class="pl-kos">&gt;</span><span class="pl-kos">&lt;/</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                    <span class="pl-kos">&lt;</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span><span class="pl-kos">&lt;</span><span class="pl-ent">a</span> <span class="pl-c1">href</span>="<span class="pl-s">javascript:;</span>"<span class="pl-kos">&gt;</span>Tab 1<span class="pl-kos">&lt;/</span><span class="pl-ent">a</span><span class="pl-kos">&gt;</span><span class="pl-kos">&lt;/</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                    <span class="pl-kos">&lt;</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span><span class="pl-kos">&lt;</span><span class="pl-ent">a</span> <span class="pl-c1">href</span>="<span class="pl-s">javascript:;</span>"<span class="pl-kos">&gt;</span>Tab 1<span class="pl-kos">&lt;/</span><span class="pl-ent">a</span><span class="pl-kos">&gt;</span><span class="pl-kos">&lt;/</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                <span class="pl-kos">&lt;/</span><span class="pl-ent">ul</span><span class="pl-kos">&gt;</span>
                <span class="pl-kos">&lt;</span><span class="pl-ent">div</span> <span class="pl-c1">style</span>="<span class="pl-s">margin:20px 5px;</span>"<span class="pl-kos">&gt;</span>
                    <span class="pl-kos">&lt;</span><span class="pl-ent">h4</span><span class="pl-kos">&gt;</span>Pictures<span class="pl-kos">&lt;/</span><span class="pl-ent">h4</span><span class="pl-kos">&gt;</span>
                    <span class="pl-kos">&lt;</span><span class="pl-ent">ul</span> <span class="pl-c1">class</span>="<span class="pl-s">media-grid</span>"<span class="pl-kos">&gt;</span>
                        <span class="pl-kos">&lt;</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                            <span class="pl-kos">&lt;</span><span class="pl-ent">a</span> <span class="pl-c1">href</span>="<span class="pl-s">javascript:;</span>"<span class="pl-kos">&gt;</span>
                                <span class="pl-kos">&lt;</span><span class="pl-ent">img</span> <span class="pl-c1">class</span>="<span class="pl-s">thumbnail</span>" <span class="pl-c1">src</span>="<span class="pl-s">http://placehold.it/210x150</span>" <span class="pl-c1">alt</span>=""<span class="pl-kos">&gt;</span>
                            <span class="pl-kos">&lt;/</span><span class="pl-ent">a</span><span class="pl-kos">&gt;</span>
                        <span class="pl-kos">&lt;/</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                        <span class="pl-kos">&lt;</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                            <span class="pl-kos">&lt;</span><span class="pl-ent">a</span> <span class="pl-c1">href</span>="<span class="pl-s">javascript:;</span>"<span class="pl-kos">&gt;</span>
                                <span class="pl-kos">&lt;</span><span class="pl-ent">img</span> <span class="pl-c1">class</span>="<span class="pl-s">thumbnail</span>" <span class="pl-c1">src</span>="<span class="pl-s">http://placehold.it/210x150</span>" <span class="pl-c1">alt</span>=""<span class="pl-kos">&gt;</span>
                            <span class="pl-kos">&lt;/</span><span class="pl-ent">a</span><span class="pl-kos">&gt;</span>
                        <span class="pl-kos">&lt;/</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                        <span class="pl-kos">&lt;</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                            <span class="pl-kos">&lt;</span><span class="pl-ent">a</span> <span class="pl-c1">href</span>="<span class="pl-s">javascript:;</span>"<span class="pl-kos">&gt;</span>
                                <span class="pl-kos">&lt;</span><span class="pl-ent">img</span> <span class="pl-c1">class</span>="<span class="pl-s">thumbnail</span>" <span class="pl-c1">src</span>="<span class="pl-s">http://placehold.it/210x150</span>" <span class="pl-c1">alt</span>=""<span class="pl-kos">&gt;</span>
                            <span class="pl-kos">&lt;/</span><span class="pl-ent">a</span><span class="pl-kos">&gt;</span>
                        <span class="pl-kos">&lt;/</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                        <span class="pl-kos">&lt;</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                            <span class="pl-kos">&lt;</span><span class="pl-ent">a</span> <span class="pl-c1">href</span>="<span class="pl-s">javascript:;</span>"<span class="pl-kos">&gt;</span>
                                <span class="pl-kos">&lt;</span><span class="pl-ent">img</span> <span class="pl-c1">class</span>="<span class="pl-s">thumbnail</span>" <span class="pl-c1">src</span>="<span class="pl-s">http://placehold.it/210x150</span>" <span class="pl-c1">alt</span>=""<span class="pl-kos">&gt;</span>
                            <span class="pl-kos">&lt;/</span><span class="pl-ent">a</span><span class="pl-kos">&gt;</span>
                        <span class="pl-kos">&lt;/</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                        <span class="pl-kos">&lt;</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                            <span class="pl-kos">&lt;</span><span class="pl-ent">a</span> <span class="pl-c1">href</span>="<span class="pl-s">javascript:;</span>"<span class="pl-kos">&gt;</span>
                                <span class="pl-kos">&lt;</span><span class="pl-ent">img</span> <span class="pl-c1">class</span>="<span class="pl-s">thumbnail</span>" <span class="pl-c1">src</span>="<span class="pl-s">http://placehold.it/210x150</span>" <span class="pl-c1">alt</span>=""<span class="pl-kos">&gt;</span>
                            <span class="pl-kos">&lt;/</span><span class="pl-ent">a</span><span class="pl-kos">&gt;</span>
                        <span class="pl-kos">&lt;/</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                    <span class="pl-kos">&lt;/</span><span class="pl-ent">ul</span><span class="pl-kos">&gt;</span>                
                <span class="pl-kos">&lt;/</span><span class="pl-ent">div</span><span class="pl-kos">&gt;</span>
                <span class="pl-kos">&lt;</span><span class="pl-ent">div</span> <span class="pl-c1">style</span>="<span class="pl-s">margin:20px 5px;</span>"<span class="pl-kos">&gt;</span>
                    <span class="pl-kos">&lt;</span><span class="pl-ent">h4</span><span class="pl-kos">&gt;</span>Videos<span class="pl-kos">&lt;/</span><span class="pl-ent">h4</span><span class="pl-kos">&gt;</span>
                    <span class="pl-kos">&lt;</span><span class="pl-ent">ul</span> <span class="pl-c1">class</span>="<span class="pl-s">media-grid</span>"<span class="pl-kos">&gt;</span>
                        <span class="pl-kos">&lt;</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                            <span class="pl-kos">&lt;</span><span class="pl-ent">a</span> <span class="pl-c1">href</span>="<span class="pl-s">javascript:;</span>"<span class="pl-kos">&gt;</span>
                                <span class="pl-kos">&lt;</span><span class="pl-ent">img</span> <span class="pl-c1">class</span>="<span class="pl-s">thumbnail</span>" <span class="pl-c1">src</span>="<span class="pl-s">http://placehold.it/330x230</span>" <span class="pl-c1">alt</span>=""<span class="pl-kos">&gt;</span>
                            <span class="pl-kos">&lt;/</span><span class="pl-ent">a</span><span class="pl-kos">&gt;</span>
                        <span class="pl-kos">&lt;/</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                        <span class="pl-kos">&lt;</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                            <span class="pl-kos">&lt;</span><span class="pl-ent">a</span> <span class="pl-c1">href</span>="<span class="pl-s">javascript:;</span>"<span class="pl-kos">&gt;</span>
                                <span class="pl-kos">&lt;</span><span class="pl-ent">img</span> <span class="pl-c1">class</span>="<span class="pl-s">thumbnail</span>" <span class="pl-c1">src</span>="<span class="pl-s">http://placehold.it/330x230</span>" <span class="pl-c1">alt</span>=""<span class="pl-kos">&gt;</span>
                            <span class="pl-kos">&lt;/</span><span class="pl-ent">a</span><span class="pl-kos">&gt;</span>
                        <span class="pl-kos">&lt;/</span><span class="pl-ent">li</span><span class="pl-kos">&gt;</span>
                    <span class="pl-kos">&lt;/</span><span class="pl-ent">ul</span><span class="pl-kos">&gt;</span>
                <span class="pl-kos">&lt;/</span><span class="pl-ent">div</span><span class="pl-kos">&gt;</span>
            <span class="pl-kos">&lt;/</span><span class="pl-ent">div</span><span class="pl-kos">&gt;</span>
        <span class="pl-kos">&lt;/</span><span class="pl-ent">div</span><span class="pl-kos">&gt;</span>
    <span class="pl-kos">&lt;/</span><span class="pl-ent">body</span><span class="pl-kos">&gt;</span>
<span class="pl-kos">&lt;/</span><span class="pl-ent">html</span><span class="pl-kos">&gt;</span></pre></div>