stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and
          attribution notices from the Source form of the Work,
          excluding those notices that do not pertain to any part of
          the Derivative Works; and

text-shadow: 0 0 0 $input-color;\n  }\n\n  &:focus::-ms-value {\n    // Suppress the nested default white text on 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...