Google changes search results layout
Google has changed the layout of its search engine results pages (serps) to a format which is much closer to those they have been using on tablet and smartphone devices. The official Google blog post indicates the thinking behind the change:
'....we've been working on ways to create a consistent search experience across the wide variety of devices and screen sizes. With the new design, there's a bit more breathing room……whether from web results or from a feature like the Knowledge Graph.'
As can be seen, what has essentially happened is that the left hand navigation menus have moved to the top bar above the search results.