Merge pull request #11084 from ZDroid/variable_way

Unhardcode .table-responsive bottom margin

diff --cc less/tables.less
index 1e4a4d14ed4561401295ac9130e70af673256698,6ca19ad587a699c07490bd1ba834a4bcfeed6c3c..0deadc7820854248ab89c3045586cd226ad3fa92
--- 1/less/tables.less
--- 2/less/tables.less
+++ b/less/tables.less
@@@ -171,10 -171,10 +171,10 @@@ table 
  // by enabling horizontal scrolling. Only applies <768px. Everything above that
  // will display normally.
  
 -@media (max-width: @screen-sm-min) {
 +@media (max-width: @screen-xs-max) {
    .table-responsive {
      width: 100%;
-     margin-bottom: 15px;
+     margin-bottom: (@line-height-computed * 0.75);
      overflow-y: hidden;
      overflow-x: scroll;
      -ms-overflow-style: -ms-autohiding-scrollbar;