style.css

.NumberPicker__wrapper {
  display: inline-block;
  margin: 0;
  padding: 3px 10px;
  border-radius: 10px;
  background-color: #FAFAFA;
  border: 1px solid #E0E0E0;
  background: -webkit-linear-gradient(top, rgba(0, 0, 0, 0.05) 0%, transparent 100%);
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.05) 0%, transparent 100%);
  /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#12000000', endColorstr='#00000000',GradientType=0 ); }
  .NumberPicker__wrapper:after {
    display: block;
    content: '';
    clear: both; }

.NumberPicker__table {
  display: table; }

.NumberPicker__row {
  display: table-row; }

.NumberPicker__cell {
  display: table-cell;
  text-align: center;
  vertical-align: middle;
  min-width: 10px;
  margin: 0;
  padding: 0 5px 0 10px; }

.NumberPicker__cell > span.digit {
  font-family: Tahoma, Geneva, sans-serif;
  color: #616161;
  font-size: 16pt; }

.NumberPicker__cell.decimal-separator {
  padding-left: 0;
  padding-right: 0; }

.NumberPicker__cell.decimal-separator > span.decimal-separator {
  font-family: Tahoma, Geneva, sans-serif;
  color: #616161;
  font-weight: bold;
  font-size: 16pt; }

.NumberPicker__cell > span {
  /* prevents selecting when double clicking */
  -webkit-user-select: none;
  /* webkit (safari, chrome) browsers */
  -moz-user-select: none;
  /* mozilla browsers */
  -khtml-user-select: none;
  /* webkit (konqueror) browsers */
  -ms-user-select: none;
  /* IE10+ */ }

.NumberPicker__cell.currency > span.currency {
  font-family: Tahoma, Geneva, sans-serif;
  color: #616161;
  font-weight: bold;
  font-size: 16pt; }

.NumberPicker__cell.button.up {
  padding-bottom: 5px; }

.NumberPicker__cell.button.down {
  padding-top: 5px; }

.NumberPicker__cell.button > span {
  cursor: pointer; }

.NumberPicker__cell.button > span.up {
  position: relative;
  top: -10px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 5px 10px 5px;
  border-color: transparent transparent #ddd transparent; }

.NumberPicker__cell.button > span.down {
  position: relative;
  top: 10px;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 5px 0 5px;
  border-color: #ddd transparent transparent transparent; }