earn/CSS/Building_blocks/Selectors">CSS selector</a></em> <code>.jumbo a.button</code>. This is the same syntax we used in our stylesheet, which means "look inside the tag with the <code>jumbo</code> class for an <code>&lt;a&gt;</code> tag with the <code>button</code> class." This matches up with the HTML structure in our template.</p>
<p>Once the existence of this element on the page was confirmed, we told the test robot to click on this link. As mentioned above, this is a user interaction, so it needs to 