Ask HN: How to code complex web design trends?

As a frontend developer, I always like to visit ui design websites and checkout what are the latest web design trends. I've never had any problems with turning them into code but in the past few months I've come to realize that more and more there are some stuff that I just don't have any idea on how to translate to CSS and I just can't seem to find articles or blog posts talking about this subject. Do you have any tips / links that you would recommend?