<!DOCTYPe html>
<meta charset='utf-8'>
<title>drag and drop – draggable areas – outline</title>
<style>
a {
  display: block;
  height: 200px;
  width: 200px;
  background-color: blue;
  outline: 10px solid orange;
}
</style>

<p>Try dragging the orange border of the blue box below. It should <em>not</em> be draggable.</p>

<a href='#' draggable="true" ondragstart="event.dataTransfer.effectAllowed ='copy'"></a>