I have tested my self-signed SSL certificate for https site. when I access my https site such as https://example.com on my computer, Chrome browers will give me SSL warning about un-trusted site something like that and I follow instuction from a link, the warning is gone. But why it always has red-cross and read-slash mark around https at address bar even I 've saved and put my self-signed SSL cert into the trusted vendor folder on Chrome browser as a trusted cert only on my computer.
Whether must I buy third-party SSL cert to get rid of those red mark ? That is only method?