The "System Libraries" of an executable work include anything, other
than the work as a whole, that (a) is included in the normal form of
packaging a Major Component, but which is not part of that Major
Component, and (b) serves only to enable use of the work with that
Major Component, or to implement a Standard Interface for which an
implementation is available to the public in source code form.  A

$table-dark-accent-bg;\n    }\n  }\n\n  &.table-hover {\n    tbody tr {\n      @include hover() {\n        color: $table-dark-hover-color;\n        background-color: $table-dark-hover-bg;\n      }\n    }\n  }\n}\n\n\n// Responsive tables\n//\n// Generate series of `.table-responsive-*` classes for configuring the screen\n// size of where your table will overflow.\n\n.table-responsive {\n  @each $breakpoint in map-keys($grid-breakpoints) {\n    $next: breakpoint-next($breakpoint, $grid-breakpoints);\n   ...