errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return document.documentElement;\n  }\n\n  // Here we make sure to give as \"start\" the element that comes first in the DOM\n  const order =\n    element1.compareDocumentPosition(element2) &\n    Node.DOCUMENT_POSITION_FOLLOWING;\n  const start = order ? element1 : element2;\n  const end = order ? element2 : element1;\n\n  // Get common ancestor container\n...

list items\n//\n// Use anchor or button elements instead of `li`s or `div`s to create interactive\n// list items. Includes an extra `.active` modifier class for selected items.\n\n.list-group-item-action {\n  width: 100%; // For `<button>`s (anchors become 100% by default though)\n  color: $list-group-action-color;\n  text-align: inherit; // For `<button>`s (anchors inherit)\n\n  // Hover state\n  @include hover-focus {\n    z-index: 1; // Place hover/focus items above their siblings for proper border...

list items\n//\n// Use anchor or button elements instead of `li`s or `div`s to create interactive\n// list items. Includes an extra `.active` modifier class for selected items.\n\n.list-group-item-action {\n  width: 100%; // For `<button>`s (anchors become 100% by default though)\n  color: $list-group-action-color;\n  text-align: inherit; // For `<button>`s (anchors inherit)\n\n  // Hover state\n  @include hover-focus() {\n    z-index: 1; // Place hover/focus items above their siblings for proper border...

list items\n//\n// Use anchor or button elements instead of `li`s or `div`s to create interactive\n// list items. Includes an extra `.active` modifier class for selected items.\n\n.list-group-item-action {\n  width: 100%; // For `<button>`s (anchors become 100% by default though)\n  color: $list-group-action-color;\n  text-align: inherit; // For `<button>`s (anchors inherit)\n\n  // Hover state\n  @include hover-focus() {\n    z-index: 1; // Place hover/focus items above their siblings for proper border...