CSS hover off transition not working
<p>I am making navigation buttons for a portfolio website, hovering works perfectly but once the mouse hovers off, the button pops back to the original position instead of transitioning back slowly.</p>

<p>Here is the code:</p>

<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-css lang-css prettyprint-override"><code>li {
  list-style-type: none;
  margin: 20px 5px 0px 5px;
}
nav ul li a {
  display: block;
  margin: 30px 10px;
  text-decoration: none !important;
  text-align: center;
  width: 90px;
  padding: 6px 0;
  border-radius: 4px;
  -o-transition: all 300ms ease-in-out;
  -ms-transition: all 300ms ease-in-out;
  -webkit-transition: all 300ms ease-in-out;
  -moz-transition: all 300ms ease-in-out;
  transition: all 300ms ease-in-out;
  background: #E6E5CC;
  float: right;
  top: 0px;
  left: 0px;
}
nav ul li a:hover {
  color: inherit;
  position: relative;
  top: 0px;
  right: 0;
  bottom: 0;
  left: 0px;
  top: -5px;
  left: -5px;
  box-shadow: 1px 1px 0px #e3e2c5, 2px 2px 0px #dfdebe, 3px 3px 0px #cbc995, 4px 4px 0px #b4b165, 5px 5px 0px #56542a;
  background: #f7f6ee;
}
nav ul li a:active {
  color: inherit;
  top: 5px;
  left: 5px;
  box-shadow: 0px 0px 5px white;
}</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;nav&gt;
  &lt;ul&gt;
    &lt;li&gt;
      &lt;a href="#"&gt;Contact&lt;/a&gt;
    &lt;/li&gt;
    &lt;li&gt;
      &lt;a href="#"&gt;Projects&lt;/a&gt;
    &lt;/li&gt;
    &lt;li&gt;
      &lt;a href="#"&gt;Blog&lt;/a&gt;
    &lt;/li&gt;
    &lt;li&gt;
      &lt;a href="#"&gt;About&lt;/a&gt;
    &lt;/li&gt;
  &lt;/ul&gt;
&lt;/nav&gt;</code></pre>
</div>
</div>
</p>