Answers for "remove select box icon"

select list hide default arrow

select {
    -webkit-appearance: none;
    -moz-appearance: none;
    text-indent: 1px;
    text-overflow: '';
}

select dropdown icon change

-webkit-appearance: none;
-moz-appearance: none;
appearance: none;
background: transparent url(http://cdn1.iconfinder.com/data/icons/cc_mono_icon_set/blacks/16x16/br_down.png) no-repeat 100% center;