Remove Default round border of select element in Mac OS Browser, Chrome and android

select{ 
   -webkit-appearance: none;
   -moz-appearance:    none;
   appearance:         none;   
   -webkit-border-radius: 0;  /* Safari 3-4, iOS 1-3.2, Android 1.6- */    
   -moz-border-radius: 0;  /* Firefox 1-3.6 */     
   border-radius: 0;  /* Opera 10.5, IE 9, Safari 5, Chrome, Firefox 4, iOS 4, Android 2.1+ */
}