jquery - How do I traverse till class multi -

<div class="awe-ajaxcheckboxlist-field awe-field form-control">   <input name="mftestname" id="mftestname" class="awe-val awe-array" type="hidden" disabled="disabled" value="">   <div class="awe-display">     <div class="inputcont" style="display: none;">       <input type="checkbox" value="" name="mftestname">     </div>     <div class="odropdown">       <div class="odisplay">         <div class="multi">           <span class="aption">select mf test(s)</span>           <input type="text" class="osearch awe-il">         </div>       </div>     </div>   </div> </div> 

how class multi change css. did this

$("div.multi").css("background-color", "red"); 

but change color red multi select components. want color change happen component id mftestname.