materials/javascript/javascript-and-jquery-book-code/c13/css/number.css
/* HTML5 Number polyfill | Jonathan Stipe | https://github.com/jonstipe/number-polyfill*/
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-width: 2px;
  border-color: #ededed #777777 #777777 #ededed;
  border-style: solid;
  background-color: #cccccc;
  width: 1.2em; }
  div.number-spin-btn:hover {
    cursor: pointer; }
  div.number-spin-btn:active {
    border-width: 2px;
    border-color: #5e5e5e #d8d8d8 #d8d8d8 #5e5e5e;
    border-style: solid;
    background-color: #999999; }

div.number-spin-btn-up {
  border-bottom-width: 1px;
  -moz-border-radius: 3px 3px 0px 0px;
  -webkit-border-radius: 3px 3px 0px 0px;
  border-radius: 3px 3px 0px 0px; }
  div.number-spin-btn-up:before {
    border-width: 0 0.3em 0.3em 0.3em;
    border-color: transparent transparent black transparent;
    top: 25%; }
  div.number-spin-btn-up:active {
    border-bottom-width: 1px; }
  div.number-spin-btn-up:active:before {
    border-bottom-color: white;
    top: 26%;
    left: 51%; }

div.number-spin-btn-down {
  border-top-width: 1px;
  -moz-border-radius: 0px 0px 3px 3px;
  -webkit-border-radius: 0px 0px 3px 3px;
  border-radius: 0px 0px 3px 3px; }
  div.number-spin-btn-down:before {
    border-width: 0.3em 0.3em 0 0.3em;
    border-color: black transparent transparent transparent;
    top: 75%; }
  div.number-spin-btn-down:active {
    border-top-width: 1px; }
  div.number-spin-btn-down:active:before {
    border-top-color: white;
    top: 76%;
    left: 51%; }

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

input:disabled + div.number-spin-btn-container > div.number-spin-btn-up:active, input:disabled + div.number-spin-btn-container > div.number-spin-btn-down:active {
  border-color: #ededed #777777 #777777 #ededed;
  border-style: solid;
  background-color: #cccccc; }
input:disabled + div.number-spin-btn-container > div.number-spin-btn-up:before, input:disabled + div.number-spin-btn-container > div.number-spin-btn-up:active:before {
  border-bottom-color: #999999;
  top: 25%;
  left: 50%; }
input:disabled + div.number-spin-btn-container > div.number-spin-btn-down:before, input:disabled + div.number-spin-btn-container > div.number-spin-btn-down:active:before {
  border-top-color: #999999;
  top: 75%;
  left: 50%; }
