header.js

document.write(`	

  <div class="container p-3 my-3 bg-image" style="
      background-image: url('images/excel_banner.jpg');
      height: 200px;
    ">
    <div class="mask" style="background-color: rgba(0, 0, 0, 0.6);">
      <div class="d-flex justify-content-center align-items-center h-100">
        <div class="text-center text-white">
          <h1 class="mb-3">OpenExcelExport</h1>
			<p>OpenExcelExport is a basic but useful open-source application to extract technical data from an excel file: Shared strings, Styles/CellFormats, Fills, Borders and Fonts.</p>
        </div>
      </div>
    </div>
  </div>  
`);