Most basic HTML website - naming and CSS rules
You should be using HTML 5 elements such as header and nav making some/all classes and IDs unnecessary:

&lt;header&gt;
    &lt;nav&gt;
        &lt;img src="#"&gt;
        &lt;ul&gt;
            &lt;li&gt;Link&lt;/li&gt;
            &lt;li&gt;Link&lt;/li&gt;
            &lt;li&gt;Link&lt;/li&gt;
        &lt;/ul&gt;
    &lt;/nav&gt;
&lt;/header&gt;