PDX: Transparent Borders
Using CSS's RGBa
HTML
<div><br /><br /><br />Hello World</div>
CSS
div
{
border: solid 30px rgba(0, 0, 255, 0.5);
border-radius: 30px;
width: 120px;
height: 120px;
padding: 10px;
background: url(http://placekitten.com/200/200) no-repeat -30px -30px;
}