[latexila] Adapt CSS for GTK+ changes

[Sébastien Wilmet <swilmet src gnome org>]

commit 05c7847fe9173f2fc3ea411686d5d93a2fcb920b
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Wed Nov 25 18:24:14 2015 +0100

    Adapt CSS for GTK+ changes
    
    https://blogs.gnome.org/mclasen/2015/11/20/a-gtk-update/

 configure.ac                |    2 +-
 src/ui/latexila.adwaita.css |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index c0d5e65..a898889 100644
--- a/configure.ac
+++ b/configure.ac
@@ -26,7 +26,7 @@ LT_INIT
 # Required dependencies versions
 # Update also the --target-glib option in src/Makefile.am.
 GLIB_REQUIRED_VERSION="2.40"
-GTK_REQUIRED_VERSION="3.14"
+GTK_REQUIRED_VERSION="3.19.3"
 GTKSOURCEVIEW_REQUIRED_VERSION="3.18"
 GSPELL_REQUIRED_VERSION="0.2"
 VALA_REQUIRED_VERSION="0.26"
diff --git a/src/ui/latexila.adwaita.css b/src/ui/latexila.adwaita.css
index 4c8e071..3b30e78 100644
--- a/src/ui/latexila.adwaita.css
+++ b/src/ui/latexila.adwaita.css
@@ -1,3 +1,3 @@
-.primary-toolbar .button, .latexila-edit-toolbar .button {
+.primary-toolbar button, .latexila-edit-toolbar button {
     padding: 2px;
 }