blue background highlight given to\n    // the selected option text when the (still closed) <select> receives focus\n    // in IE and (under certain conditions) Edge, as it looks bad and cannot be made to\n    // match the appearance of the native widget.\n    // See https://github.com/twbs/bootstrap/issues/19398.\n    color: $input-color;\n    background-color: $input-bg;\n  }\n}\n\n// Make file inputs better match text inputs by forcing them to new lines.\n.form-control-file,\n.form-control-range...