[gtk-doc] style: add span.nowrap for text that should never wrap

[Stefan Sauer <stefkost src gnome org>]

commit 06baafc09e244a7f3e5e8f9849e83c5d6c6783d4
Author: Arnaud Rebillout <elboulangero gmail com>
Date:   Thu Dec 7 19:27:46 2017 +0700

    style: add span.nowrap for text that should never wrap
    
    And here's an example of how to use that from a Docbook xml file:
    
        <phrase role="nowrap">dont-break-me never ever</phrase>
    
    Fixes #783368.
    
    Signed-off-by: Arnaud Rebillout <elboulangero gmail com>

 style/style.css |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/style/style.css b/style/style.css
index 3675420..4be4ede 100644
--- a/style/style.css
+++ b/style/style.css
@@ -30,6 +30,10 @@ body
   vertical-align: top;
 }
 
+span.nowrap {
+  white-space: nowrap;
+}
+
 div.gallery-float
 {
   float: left;