Border does not show up

Question

My border is not showing up around my image, I'm not quite sure what the issue could be. I just need a small black border around the photo. My website is http://www.welovetile.com. I can't figure out what the problem could be. Thanks.

CSS:

#kitchen {
        height:250px;
        width:346px;
        background-image:url(images/kitchenbg.jpg);
    }

        #kitchen img
        {   
            top: 50%;
            left: 50%;
            width: 316px;
            height: 228px;
            margin-top:11px;
            margin-left:15px;
            border-color:#000000;
            border-width:thin;
        }

HTML:

<div id="kitchen">
    <img src="images/kitchen.jpg" alt="Kitchen Tile Job"/>
</div>

Answer 1

Borders have three main pieces: a width, a style, and a color; the style is required for any of the others to work.

Try adding the style:

border-style: solid;

Also, you can specify all these in the same line of css:

border: thin solid black;

Updated

As pointed out by Wesley, border-style is the only required one.

From http://www.w3schools.com/css/css_border.asp :

None of the border properties will have ANY effect unless the border-style property is set!