Question

that is, a whole html link, must be in line1 or line 2. not in two lines.

Answer 1

According to this post:

NOBR Tag not suppored by W3C. So use the alternative tag for it.
Instead of giving NOBR tag give the tag as
style=”white-space: nowrap”.

So that would mean you should say:

<a style="white-space: nowrap">link</a>

Or even better, put it inside your CSS:

a { white-space: nowrap; }