div.number-spin-btn-container {
  display: inline-block;
  position: relative;
  vertical-align: bottom;
  margin: 0;
  padding: 0;
}

div.number-spin-btn {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  border: 2px outset #CCCCCC;
  background-color: #CCCCCC;
  width: 1.2em;
}

div.number-spin-btn-up {
  border-bottom-width: 1px;
  -webkit-border-radius: 3px 3px 0px 0px;
  border-radius: 3px 3px 0px 0px;
}

div.number-spin-btn-up:before {
  content: "";
  width: 0;
  height: 0;
  border-width: 0 0.3em 0.3em 0.3em;
  border-style: solid;
  border-color: transparent transparent black transparent;
  position: absolute;
  top: 25%;
  left: 50%;
  margin: -0.15em 0 0 -0.3em;
  padding: 0;
}

div.number-spin-btn-down {
  border-top-width: 1px;
  -webkit-border-radius: 0px 0px 3px 3px;
  border-radius: 0px 0px 3px 3px;
}

div.number-spin-btn-down:before {
  content: "";
  width: 0;
  height: 0;
  border-width: 0.3em 0.3em 0 0.3em;
  border-style: solid;
  border-color: black transparent transparent transparent;
  position: absolute;
  top: 75%;
  left: 50%;
  margin: -0.15em 0 0 -0.3em;
  padding: 0;
}

div.number-spin-btn:hover {
  cursor: pointer;
}

div.number-spin-btn:active {
  border: 2px inset #999999;
  background-color: #999999;
}

div.number-spin-btn-up:active:before {
  border-color: transparent transparent white transparent;
  top: 26%;
  left: 51%;
}

div.number-spin-btn-down:active:before {
  border-color: white transparent transparent transparent;
  top: 76%;
  left: 51%;
}