Call to action within a block wrapped link
I received a design for a homepage that displays recent articles. These articles are wrapped within an all encompassing anchor tag (allowed by the HTML5 spec as far as I am aware). The article all contains a call to action type element e.g. 'Book a ticket' that was formally the link before it was decided that the link would cover the whole article element.
Is this accessible?
<img src="images/homepage/XXXX.jpg" width="354" height="209" />
<p>Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit</p>
<span class="readmore">Book a ticket</span><!--Formally a link-->
- I don't believe it would be (I think because the span is not in direct context of the anchor tag? Is this correct?)
Look forward to hearing your thoughts, thanks