Span and line break

How to force span to do a line break?

I want this:

<span class="someclass">line 1</span>
<span class="someclass2">line 2</span>

to output:

line 1
line 2

instead of:

line 1 line 2

How is that possible?

have you tried <br> ?

<br> is not what I want.

display: block

someclass { display: block; }

That will display the first span as a block element, forcing the second span to begin on a new line.