Column width for web pages in eww or w3m

[Narendra Joshi]

Hi,

I use elfeed and Gnus. I would like to be able to read articles in
Emacs. Most of the articles spread across the width of Emacs windows. I
would like to limit the column upto which text is shown to say 80. That
would make reading easier for me. I don't like having a huge number of
words in a single line of the buffer. How can I achieve this? 

Best,
-- 
Narendra Joshi