Co-worker here, yeah, truly some pages of the site are not yet quite responsive, sorry for that, we plan to improve it in the future. On the site there are some particular templates designed to show the responsiveness or non-responsiveness, you could open them on smart phone or desktop computer to see the differences:

http://semantic-ui-forest.com/templates/bootstrap/grid/

http://semantic-ui-forest.com/templates/bootstrap/navbar-fix...

http://semantic-ui-forest.com/templates/bootstrap/non-respon...

Semantic-UI gives more freedom for features like responsiveness, theme customization with 3000+ variables, although the default configurations are also very good.

The rendering is awful and somewhat irrational for all three links on my phone. Was that designed to show non-responsiveness?

I think it's not detecting my mobile as mobile. Motorola Play X here in Android, chrome

Oh，yeah, it's set to be like so in the HTML's header, so you could see the whole webpage's layout like on a computer, we are going to improve the responsiveness soon. For developers who want to apply some themes and templates to build their websites, it may be useful. Thanks for visiting!

I think the layout issues go beyond not being responsive. I usually don't mind at all to just center on the main article text and read in the general layout. However, the article layout assumed such a huge screen width that it's impossible to read on an iPhone without coming in and manually dragging left and right as you read.

This site was released for just about one week, and yes, we know there're still many many problems, we will fix that as soon as possible.