Will changing the html and graphical content of my website affect search result?

Tweet

I've been working on my new website design for a few months with different html coding, new images and graphical content. I've tried to maintain the same text content and tahs so the search engines can still recognize my site. I've moved the text around in my new site. I've worked very hard and with some main key words, my site resulted in the first top few results in search engines. Will updating and completely changing the html coding and graphical content but maintaining the text change my ranking results in search engines?