Rework navbar padding and margins for right aligned last-child elements

This slight reworking of the navbar spacing was brought about by a
problem noted in #11530: use of `.navbar-form.navbar-right` leaves an
extra 15px of space on the right.

Here’s what’s new:

* Removed the `padding` on `.navbar-collapse` within static top, fixed
top, and fixed bottom navbars. Meaning, it’s still there for the
default navbar. This was the root cause of the extra 15px padding for
navbar forms.
* As part of this, I also replaced the existing negative margin
overrides for last-child elements with more contextual ones within
their sub-components.

Overall not too different, but should be more effective now and easier
to work with now.

For example of new changes, see http://jsbin.com/odeSiSo/1/.

1 files changed, 14 insertions, 8 deletions

diff --git a/dist/css/bootstrap.css b/dist/css/bootstrap.css
index b4fdb28ab..6351224b8 100644
--- a/dist/css/bootstrap.css
+++ b/dist/css/bootstrap.css
@@ -4426,14 +4426,11 @@ textarea.input-group-sm > .input-group-btn > .btn {
   .navbar-collapse.in {
     overflow-y: auto;
   }
-  .navbar-collapse .navbar-nav.navbar-left:first-child {
-    margin-left: -15px;
-  }
-  .navbar-collapse .navbar-nav.navbar-right:last-child {
-    margin-right: -15px;
-  }
-  .navbar-collapse .navbar-text:last-child {
-    margin-right: 0;
+  .navbar-fixed-top .navbar-collapse,
+  .navbar-static-top .navbar-collapse,
+  .navbar-fixed-bottom .navbar-collapse {
+    padding-right: 0;
+    padding-left: 0;
   }
 }
 
@@ -4581,6 +4578,9 @@ textarea.input-group-sm > .input-group-btn > .btn {
     padding-top: 15px;
     padding-bottom: 15px;
   }
+  .navbar-nav.navbar-right:last-child {
+    margin-right: -15px;
+  }
 }
 
 @media (min-width: 768px) {
@@ -4647,6 +4647,9 @@ textarea.input-group-sm > .input-group-btn > .btn {
     -webkit-box-shadow: none;
             box-shadow: none;
   }
+  .navbar-form.navbar-right:last-child {
+    margin-right: -15px;
+  }
 }
 
 .navbar-nav > li > .dropdown-menu {
@@ -4692,6 +4695,9 @@ textarea.input-group-sm > .input-group-btn > .btn {
     margin-right: 15px;
     margin-left: 15px;
   }
+  .navbar-text.navbar-right:last-child {
+    margin-right: 0;
+  }
 }
 
 .navbar-default {