Well here as though not a lot of options. Wrap/replace all table, or javascript to set the width of the parent. You can still try the version with
\r
\r
#parent{white-space:nowrap;} .child{display:inline-block;}
with all the consequences, but physically, your posts will not stretch the container.
As for me the easiest way to do this:
\r
$(function(){ var w = 0; $(".child").each(function(){ w += $(this).width(); }); $("#parent").width(w); });