text: var elements = document.getElementsByTagName('script')
  
  Array.prototype.forEach.call(elements, function(element) {
    if (element.type.indexOf('math/tex') != -1) {
      // Extract math markdown
      var textToRender = element.innerText || element.textContent;
  
      // Kramdown and KaTeX workaround
      // https://github.com/rohanchandra/type-theme/issues/47
      textToRender = textToRender.replace(/%.*/g, '');
  
      // Create span for KaTeX
      var katexElement = document.createElement('span');
  
      // Support inline and display math
      if (element.type.indexOf('mode=display') != -1){
        katexElement.className += "math-display";
        textToRender = '\\displaystyle {' + textToRender + '}';
      } else {
        katexElement.className += "math-inline";
      }
  
      katex.render(textToRender, katexElement);
      element.parentNode.insertBefore(katexElement, element);
    }
  });
  