.dropdown{
   margin: 0px;
   width: auto;
   /*height: 28px;*/
  
   padding: 5px 5px; 
   overflow:visible;
   -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
   background: url(arrow-down.png) 95%  no-repeat;
    color: #666666;
    -moz-border-radius: 5px;
border-radius: 5px;
background:white;
  border: 0px solid gray;
    font-family: Arial, Helvetica, sans-serif;
}