text: /**
   * DemoBox tag
   *
   * Syntax:
   *   {% demobox href="/path/to/your/demo/page" with=300px height=300px %}
   *
   */
  hexo.extend.tag.register('demobox', function (args) {
      var params = {};
  
      args.every(function (item) {
          var pos = item.indexOf('=');
          if (pos > -1)params[item.substring(0, pos)] = item.substring(pos + 1, item.length);
      });
  
      var style = "border: 10px solid #ede; width: ' + (params.width ? params.width : '100%') + '; height: ' + (params.height ? params.height : '100%') + '; ";
  
      return '<div class="demo-container" style="' + style + '"><iframe width="100%" height="100%" src="' + (params.href ? params.href : 'about:blank') + '" frameborder="0" allowfullscreen></iframe></div>'
  });