Merge pull request #8413 from cvrebert/misc-less-refactoring

refactor {badges,jumbotron,media,popover,print}.less (mostly nesting)

less/badges.less

@@ -35,11 +35,9 @@ a.badge {
 }
 
 // Quick fix for labels/badges in buttons
-.btn {
-  .badge {
-    position: relative;
-    top: -1px;
-  }
+.btn .badge {
+  position: relative;
+  top: -1px;
 }
 
 // Account for counters in navs

less/jumbotron.less

@@ -18,13 +18,10 @@
   p {
     line-height: 1.4;
   }
-}
 
-@media screen and (min-width: @screen-tablet) {
-  .jumbotron {
+  @media screen and (min-width: @screen-tablet) {
     padding: 50px 60px;
     border-radius: @border-radius-large; // Only round corners at higher resolutions
-
     h1 {
       font-size: (@font-size-base * 4.5);
     }

less/media.less

@@ -36,11 +36,13 @@
 // Media image alignment
 // -------------------------
 
-.media > .pull-left {
-  margin-right: 10px;
-}
-.media > .pull-right {
-  margin-left: 10px;
+.media {
+  > .pull-left {
+    margin-right: 10px;
+  }
+  > .pull-right {
+    margin-left: 10px;
+  }
 }
 
 

less/popovers.less

@@ -50,14 +50,16 @@
 //
 // .arrow is outer, .arrow:after is inner
 
-.popover .arrow,
-.popover .arrow:after {
-  position: absolute;
-  display: block;
-  width: 0;
-  height: 0;
-  border-color: transparent;
-  border-style: solid;
+.popover .arrow {
+  &,
+  &:after {
+    position: absolute;
+    display: block;
+    width: 0;
+    height: 0;
+    border-color: transparent;
+    border-style: solid;
+  }
 }
 .popover .arrow {
   border-width: @popover-arrow-outer-width;

less/print.less

@@ -71,13 +71,17 @@
   .navbar {
     display: none;
   }
-  .table td,
-  .table th {
-    background-color: #fff !important;
-  }
-  .btn > .caret,
-  .dropup > .btn > .caret {
-    border-top-color: #000 !important;
+  .table {
+    td,
+    th {
+      background-color: #fff !important;
+    }
+  }
+  .btn,
+  .dropup > .btn {
+    > .caret {
+      border-top-color: #000 !important;
+    }
   }
   .label {
     border: 1px solid #000;