title: Add multiple element in header pdfmake
body: <p>I am making a sales invoice pdf using <strong>pdfmake</strong>. I want to put my company logo, and company details such as name, contact number, email, website etc in the header of the pdf document. I tried</p>
  <p><code>header: &quot;document header&quot;</code></p>
  <pre><code>var docDefinition = {
    header: 'simple text',
  
    footer: {
      columns: [
        'Left part',
        { text: 'Right part', alignment: 'right' }
      ]
    },
  
    content: (...)
  };
  </code></pre>
  <p>I can only add one pdfmake element. I want to add multiple-element in the header (and footer) of the document. Is it possible to add multiple-element? Is there any alternative way to achieve this?</p>
  <p>[1] <a href="https://pdfmake.github.io/docs/document-definition-object/headers-footers/" rel="nofollow noreferrer">https://pdfmake.github.io/docs/document-definition-object/headers-footers/</a></p>
  <p>I tried example from above url[1]. it doesn't mention multiple elements.</p>