<title>Navigable A</title> <iframe src="/asset?url=https%3A%2F%2Fgithub.com%2Fvvvvtvvv%2Fb-1.html"></iframe> Click me <title>Navigable B</title> <iframe src="/asset?url=https%3A%2F%2Fgithub.com%2Fvvvvtvvv%2Fc.html"></iframe>