[epiphany] Improve Firefox sync dialog

[Jan-Michael Brummer <jbrummer src gnome org>]

commit 14a3a83f67b5e9687add1526b81523d464ac195f
Author: Jan-Michael Brummer <jan brummer tabos org>
Date:   Sun Dec 6 14:01:54 2020 +0100

    Improve Firefox sync dialog
    
    - Set clamp width to 1024
    - Set border to 12
    - Set modal to False to support webmail client usage
    
    Fixes: https://gitlab.gnome.org/GNOME/epiphany/-/issues/1387
    Fixes: https://gitlab.gnome.org/GNOME/epiphany/-/issues/468

 src/resources/gtk/firefox-sync-dialog.ui | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/src/resources/gtk/firefox-sync-dialog.ui b/src/resources/gtk/firefox-sync-dialog.ui
index eed451d41..8f6dfbef5 100644
--- a/src/resources/gtk/firefox-sync-dialog.ui
+++ b/src/resources/gtk/firefox-sync-dialog.ui
@@ -3,7 +3,7 @@
   <requires lib="gtk+" version="3.0"/>
   <template class="EphyFirefoxSyncDialog" parent="HdyWindow">
     <property name="visible">True</property>
-    <property name="modal">True</property>
+    <property name="modal">False</property>
     <property name="window-position">center-on-parent</property>
     <property name="default-width">640</property>
     <property name="default-height">800</property>
@@ -24,6 +24,8 @@
         <child>
           <object class="HdyClamp">
             <property name="visible">True</property>
+            <property name="maximum-size">1024</property>
+            <property name="margin">12</property>
             <child>
               <object class="GtkBox">
                 <property name="visible">True</property>