/* REMOVE STYLES */
select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  margin: 0;
  width: 100%;
  padding: 8px;
  line-height: 1.5em;
  display:inline-block;
  color: #666;
  border: 1px solid #CCC;
}

select {
  background-image:
    linear-gradient(45deg, transparent 50%, gray 50%),
    linear-gradient(135deg, gray 50%, transparent 50%),
    linear-gradient(to right, #ccc, #ccc);
  background-position:
    calc(100% - 20px) 1em,
    calc(100% - 15px) 1em,
    calc(100% - 2.5em) 5px;
  background-size:
    5px 5px,
    5px 5px,
    1px 1.5em;
  background-repeat: no-repeat;
}

select:focus {
  background-image:
    linear-gradient(45deg, green 50%, transparent 50%),
    linear-gradient(135deg, transparent 50%, green 50%),
    linear-gradient(to right, #ccc, #ccc);
  background-position:
    calc(100% - 15px) 1em,
    calc(100% - 20px) 1em,
    calc(100% - 2.5em) 0.5em;
  background-size:
    5px 5px,
    5px 5px,
    1px 1.5em;
  background-repeat: no-repeat;
  outline: 0;
}

select:hover { border-color: #000; }