If I use text-align:justify the short phrases are bad.

[ghost]

If I use text-align:justify, short sentences (for example a short list) are written like this:

- This                    is                               the                short                            phrase;

How to fix?

[anitsirc]

That's just how Word works sometimes with justified text, it will depend on your content. Try adding a new line or something after your sentence.

I added your sentence in a justified and it looked fine

[ghost]

No Cristina, now you're wrong. Because if I select that phrase in my Word document and then click on the justify button it justify it good, without spaces. How to? There are two types of justify?

[anitsirc]

How does your html look like?

[ghost]

It looks good. Without spaces.

[anitsirc]

syntax wise :) (share the html so that I can help)