This website is the new main site that my current company edited to talk about Tax Sytems. It works very simply but the real challenge was to make a CMS (wordpress) have a good grade on Google PageSpeed Insight.
Indeed, this website needs to be SEO friendly, and it was optimized to be as light as possible, and still stay good looking and user friendly.
It’s a WordPress, on the Bootstrap theme, and Less engine. It’s totally responsive. I implemented a W3TC cache system as well.
Have a look at this project