Box-shadow is not showing or z-index

Tags: html,css,z-index,css3

Problem :

i have tried as much i know about this stuff but failed to show box-shadow over the image.

http://thesameffect.com/healthy-habits-and-distinctions/#related-posts

i want to show shadow overlayed on the images. same like as ..

http://thesameffect.com/blog/

Please kindly help me..

HTML :

<div class="related-posts">
    <h3 class="related-title">Related Posts</h3>
    <ul id="related-posts" class="related-list">
        <li>
            <a title="Permanent Link toHow Genetics and Epigentics Relate to Your Health and Fitness" rel="bookmark" href="http://TheSamEffect.com/how-genetics-and-epigentics-relate-to-your-health-and-fitness/">
                <img class="attachment-Header Square" width="297" height="200" title="genes2" alt="genes2" src="http://TheSamEffect.com/wp-content/uploads/genes2-297x200.jpg">
                <span class="related-heading">How Genetics and Epigentics Relate to Your Health and Fitness</span>
            </a>
        </li>

        <li>
            ...
        </li>   

        <li>
            ...
        </li>
    </ul>
</div>

CSS :

.related-posts ul {
    list-style: none outside none;
    margin: 0;
    padding: 0;
}

.related-list li {
    background-color: #F4F4F4;
    box-shadow: 0 0 10px #000000 inset;
    float: left;
    height: 150px;
    list-style: none outside none !important;
    margin: 0.25em !important;
    overflow: hidden;
    position: relative;
    text-align: center;
    width: 216px;
}

.related-posts ul li a {
    font-size: 14px;
    font-weight: normal;
    line-height: 20px;
    text-decoration: none;
}

.related-posts a {
    color: #F4F4F4;
}

.related-list img {
    display: block;
    margin: 0;
    position: absolute;
}

.related-heading {
    background-color: rgba(0, 0, 0, 0.5);
    bottom: 0;
    font-family: Conv_resea-bolditalic,"Helvetica Neue",Arial,Helvetica,sans-serif,georgia;
    font-size: 16px;
    left: 0;
    min-height: 40px;
    padding: 10px;
    position: absolute;
    width: 90.5%;
    z-index: 1;
}

PHP - WP Codes :

Thats how i am extracting images from genesis.

            $img = genesis_get_image() ? genesis_get_image( array( 'size' => 'Header Square' ) ) : '<img src="' . get_bloginfo( 'stylesheet_directory' ) . '/images/related.png" alt="' . get_the_title() . '" />';

            $related .= '<li><a href="' . get_permalink() . '" rel="bookmark" title="Permanent Link to' . get_the_title() . '">' . $img . '<span class="related-heading">' . get_the_title() . '</span></a></li>';

after doing all this stuff i am still unable to see box-shadow, Actually shadow is there at its actual place but due to z-index i think i am unable to visible shadow.

please kindly help me to resolve the issue.

thank you.

After Solution:

The following code just show the image url in Genesis.

genesis_get_image( array( 'format' => 'url' ) );

---

Solution :

Try something like this

http://jsfiddle.net/esnLn/

Set the image as div background