.document-select {
  position: relative;
}
.document-select::after {
  content: '';
  position: absolute;
  z-index: 99;
  right: 1rem;
  top: 60%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border: 0 solid transparent;
  border-left-width: 6px;
  border-right-width: 6px;
  border-top: 6px solid #666;
}
.document-select select {
  appearance: none;
  position: relative;
  height: 3rem;
  padding: 0 0.75rem;
  margin: 0;
  border: 1px solid #ccc;
  border-radius: 0.25rem;
  padding-right: 2rem;
  position: relative;
}