styling to the <br> tag?

This is a sentence in one line and the next word is styled with a test-style.

This is some text and it has to be repeated to trigger an automatic linebreak. This is some text and it has to be repeated to trigger an automatic linebreak. This is some text and it has to be repeated to trigger an automatic linebreak.

This is another sentence.
And one more in a new line.

This is another sentence.
And one more in a new line.

This is another sentence.
And one more in a new line.