[css-position]: What about min-top, min-left, min-right, min-bottom?

I regularly get a request to write headers, navigation or advertisement 
elements which are supposed to scroll with the page but are supposed to get 
fixed to the viewport as soon as a certain limit to the viewport has been 
reached.

There are a number of webpages implementing exactly this behaviour. But they 
all are using JavaScript to get this implemented.

I have seen many questions on corresponding "min-top" and similar CSS 
properties on StackExchange, but I didn't find discussions here.

What is the opinion of the workgroup about adding properties like min-top, 
min-left, min-right, min-bottom to the specification which would switch the 
corresponding element's position value from static/relative/absolute to 
fixed in regard to the corresponding axis as soon as its computed position 
reaches a minimum distance to one of the viewport borders?

Thanks for enlightening me.

Cheers,
Axel 

Received on Wednesday, 16 September 2015 18:13:02 UTC