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    <p><strong>UPDATED ANSWER 2</strong></p> <p>We still have nested <code>&lt;ul class="side_sub_nav"&gt;</code> inside the list item <code>&lt;li&gt;</code>. But this time around we are targeting the anchor tags <code>&lt;a&gt;</code> in the list items <code>&lt;li&gt;</code>. So all the styling that was being applied to the list items are now being applied to the anchor tags. I also added anchor tags to the second level list items which you did not have before.</p> <p>I think the main issue you were having is that your second level menus were siblings (adjacent) to the elements you were hovering at the top level. This made it hard to target.</p> <p>Here is an updated jsFiddle: <a href="http://jsfiddle.net/Sggsz/6/" rel="nofollow">http://jsfiddle.net/Sggsz/6/</a>, along with the HTML and CSS below.</p> <p><strong>HTML</strong> </p> <pre><code>&lt;ul class="side_nav"&gt; &lt;li class="li_sb "&gt; &lt;a href="index.php?p=subcategories_list&amp;amp;cat=1"&gt;Vie professionnelle&lt;/a&gt; &lt;ul class="side_sub_nav"&gt; &lt;li&gt;&lt;a href="#"&gt;Vie professionnelle - subc2&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="#"&gt;Vie professionnelle - subc1&lt;/a&gt;&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;li class="li_sm "&gt; &lt;a href="index.php?p=subcategories_list&amp;amp;cat=4"&gt;Administration et droit&lt;/a&gt; &lt;ul class="side_sub_nav"&gt; &lt;li&gt;&lt;a href="#"&gt;Administration et droit - subc1&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="#"&gt;Administration et droit - subc2&lt;/a&gt;&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;li class="li_sp "&gt; &lt;a href="index.php?p=subcategories_list&amp;amp;cat=5"&gt;Vie pratique&lt;/a&gt; &lt;ul class="side_sub_nav"&gt; &lt;li&gt;&lt;a href="#"&gt;Vie pratique - subc1&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="#"&gt;Vie pratique - subc2&lt;/a&gt;&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;li class="li_sh "&gt; &lt;a href="index.php?p=subcategories_list&amp;amp;cat=6"&gt;Immobilier et logement&lt;/a&gt; &lt;ul class="side_sub_nav"&gt; &lt;li&gt;&lt;a href="#"&gt;Immobilier et logement - subc1&lt;/a&gt;&lt;/li&gt; &lt;li&gt;&lt;a href="#"&gt;Immobilier et logement - subc2&lt;/a&gt;&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;/ul&gt; </code></pre> <p><strong>CSS</strong> </p> <pre><code>.side_nav, .side_sub_nav { list-style: none; width: 250px; } .side_nav { margin-bottom: 37px; } .side_sub_nav { display: none; } .side_nav li:hover .side_sub_nav { display:block; } .side_nav a, .side_sub_nav a { height: 42px; line-height: 42px; border: 1px solid #dddddd; text-decoration: none; } .side_nav a { background-color: #f0f0f0; background-repeat: no-repeat; background-position: 8px center, 232px center; font-size: 16px; width: 205px; padding-left: 45px; display: block; color: #3f3f3f; } .side_sub_nav a { background-color: #008ec9; font-size: 12px; padding-left: 22px; color: white; } .side_sub_nav a:hover { color: red; } </code></pre> <p><strong>ANSWER 1</strong></p> <p>You should be nesting your sub menu in your list elements like so:</p> <p><strong>HTML</strong> </p> <pre><code>&lt;ul class="side_nav"&gt; &lt;li class="li_sb "&gt; &lt;a href="index.php?p=subcategories_list&amp;amp;cat=1"&gt;Vie professionnelle&lt;/a&gt; &lt;ul class="side_sub_nav"&gt; &lt;li&gt;Vie professionnelle - subc2&lt;/li&gt; &lt;li&gt;Vie professionnelle - subc1&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;li class="li_sm "&gt; &lt;a href="index.php?p=subcategories_list&amp;amp;cat=4"&gt;Administration et droit&lt;/a&gt; &lt;ul class="side_sub_nav"&gt; &lt;li&gt;Administration et droit - subc1&lt;/li&gt; &lt;li&gt;Administration et droit - subc2&lt;/li&gt; &lt;/ul&gt; &lt;/li&gt; &lt;/ul&gt; </code></pre> <p><strong>CSS</strong> </p> <pre><code>.side_sub_nav { display: none; } .side_nav li:hover .side_sub_nav { display: block; } </code></pre>
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    1. POtwo level menu - second level doesn't appear
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    1. COProbably, this could be the right sollution, but in this case I have some problems with element position. Second level should appear just under the first level, if I change layout as you suggest, then there are problems...
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    2. COAnd is it possible to have second level under the first level. Now there is some padding on the left when second level apperas. This probably is because padding-left for ul, but I need this padding for ul.li, but not for ul.li.ul...
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    3. CONot sure I follow? Just change the padding for the second level menu's `ul`. It's the browser's default padding doing this.
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