abstract contract ERC2981ContractWideRoyalties is IERC2981, ERC165 {
    address private _royaltiesRecipient;
    uint256 private _royaltiesValue;



    /// @dev Sets token royalties
    /// @param recipient recipient of the royalties
    /// @param value percentage (using 2 decimals - 10000 = 100, 0 = 0)
    function _setRoyalties(address recipient, uint256 value) internal {
        require(value <= 10000, 'ERC2981Royalties: Too high');
        _royaltiesRecipient = recipient;
        _royaltiesValue = value;
    }

    /// @inheritdoc	IERC2981
    function royaltyInfo(uint256, uint256 value)
        external
        view
        override
        returns (address receiver, uint256 royaltyAmount)
    {
        return (_royaltiesRecipient, (value * _royaltiesValue) / 10000);
    }
}
//learn more: https://docs.openzeppelin.com/contracts/3.x/erc721
// GET LISTED ON OPENSEA: https://testnets.opensea.io/get-listed/step-two
function royaltyInfo(uint256, uint256 value)
        external
        view
        override
        returns (address receiver, uint256 royaltyAmount)
    {
        return (_royaltiesRecipient, (value * _royaltiesValue) / 10000);
    }
/// @inheritdoc	IERC2981