Establishing a consistent theme and ensuring your website has the necessary ranking components; like original written content, quality source code and user friendly navigation is the first step to ranking high with today’s top search engines.
Your website must render perfectly on smart phones. If not, your ranking will greatly decrease.
Keep in mind that the goal of search engines is to provide searchers the best possible results. They want to find the most relevant and highest quality web pages to correspond with their respective search requests. If you are persistent and consistent you will never have to worry about ranking.