CSS dropdown auto width

This seems like something I should know, but I can’t find it anywhere.

How can I get the width of the dropdown ul to be as wide enough so that the anchor links don’t wrap? In the attached screenshot you can see Health & Wellness wraps.

Here’s the markup I am using:

[code]
<ul>
<li><a href=”#”>Live</a>
<ul>
<li><a href=”#”>Real Estate</a></li>
<li>…</li>
…..
</ul>
</li>
</ul>
[/code]

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