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  Native CSS Variables Introduce DEMO II<br />
  <a href="http://muki.tw/tech/native-css-variables" target="_blank">(http://muki.tw/tech/native-css-variables)</a>

    <p>我會繼承 template-default 的 --bg-color 設定,所以背景是紅色</p>
  <p>因為我不在 tempalte-default 裡面,找不到 --bg-color 這個變數,所以會顯示 fallback 的藍色</p>
              @import "compass/css3";

Native CSS Variables Introduce DEMO II
Autohr: Muki Wu
Article: http://muki.tw/tech/native-css-variables

/* basic layout start (you can skip it) */
body {
  background: #333;
  font-size: 16px;
  color: #f0f0f0;
  line-height: 1.1em;
a {
  text-decoration: none;
  color: #313131;
  &:hover {
    color: #000;
section {
  width: 500px;
  margin: 0 auto;
  background: #555;
  padding: 1em;
  div {
    margin: 0 0 2em 0;
header {
  background: #d9444a;
  text-align: center;
  color: #fff;
  padding: .7em 0;
  a {
    color: rgba(255,255,255,.6);
    @include text-shadow(1px 1px 1px #973735);
  &:after {
    content: " ";
    position: absolute;
    width: 0;
    height: 0;
    border-width: 10px;
    border-style: solid;
    border-color: #d9444a transparent transparent transparent;
    top: 53px;
    left: 50%;

h2 {
  font-size: 1em;
  margin: 0 0 .5em 0;
  background: #444;
  display: inline-block;
  padding: .5em 1.2em;
  position: relative;
  left: -1em;

/* demo code start */

template-default {
  --bg-color: #d9444a;

p {
  background: var(--bg-color, #369);
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