How to style this with css?

Wondering what is the best way to style this with css? I know float could make it happen but I don't think it is a good idea.

Love  Love is a variety of different feelings, 
      states, and attitudes that ranges from
      interpersonal affection to pleasure.

Day   A day is a unit of time. In common
      usage, it is an interval equal to 24 
      hours.

.

<li>
    <span>Love</span>
    <span>Love is a variety of different feelings, states, and attitudes that ranges from interpersonal affection to pleasure.</span>
</li>
<li>
    <span>Day</span>
    <span>A day is a unit of time. In common usage, it is an interval equal to 24 hours.</span>
</li>