CSS TWO row layout

CSS TWO row layout

HTML

<label>
<input name="library" type="radio" value="AP"/> AP
</label>
  <label>
<input name="library" type="radio" value="Beijing"/> Beijing
</label>
 <label>
<input name="library" type="radio" value="Billing"/> Billing
</label>
 <label>
<input name="library" type="radio" value="Brussels"/> Brussels
</label>
 <label>
<input name="library" type="radio" value="Denver"/> Denver
</label>
 <label>
<input name="library" type="radio" value="Hong Kong"/> Hong Kong
</label>
 <label>
<input name="library" type="radio" value="LN2"/> LN2
</label>
 <label>
<input name="library" type="radio" value="London"/> London
</label>
 <label>
<input name="library" type="radio" value="Los Angeles"/> Los Angeles
</label>
 <label>
<input name="library" type="radio" value="New York"/> New York
</label>
 <label>
<input name="library" type="radio" value="NY2"/> NY2
</label>
 <label>
<input name="library" type="radio" value="Orange County"/> Orange County
</label><br>

 <label>
<input name="library" type="radio" value="Palo Alto"/> Palo Alto
</label>
 <label>
<input name="library" type="radio" value="Sacramento"/> Sacramento
</label>
 <label>
<input name="library" type="radio" value="San Diego"/> San Diego
</label>
 <label>
<input name="library" type="radio" value="San Francisco"/> San Francisco
</label>
 <label>
<input name="library" type="radio" value="Shanghai"/> Shanghai
</label>
 <label>
<input name="library" type="radio" value="Singapore"/> Singapore
</label>
 <label>
<input name="library" type="radio" value="Tokyo"/> Tokyo
</label>
 <label>
<input name="library" type="radio" value="Virginia"/> Virginia
</label>
 <label>
<input name="library" type="radio" value="Walnut Creek"/> Walnut Creek
</label>
 <label>
<input name="library" type="radio" value="Washington DC"/> Washington DC
</label>
 <label>
<input name="library" type="radio" value="West LA"/> West LA
</label>
 <label>
<input name="library" type="radio" value="EU"/> EU
</label>