Generating PDF files from HTML with inserted business data (integrated with DocRaptor)

<!--
The following is the license for the original template file.
------------------------------------
MIT License
Copyright (c) 2021 Expected Behavior, LLC
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
------------------------------------
-->
<style>
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700&display=swap');
:root{
  --font-color: black;
  --highlight-color: #60D0E4;
  --header-bg-color: #B8E6F1;
  --footer-bg-color: #BFC0C3;
  --table-row-separator-color: #BFC0C3;
}
@page{
  size:A4;
  margin:8cm 0 3cm 0;
  @top-left{
    content:element(header);
  }
  @bottom-left{
    content:element(footer);
  }
}
body{
  margin:0;
  padding:1cm 2cm;
  color:var(--font-color);
  font-family: 'Montserrat', sans-serif;
  font-size:10pt;
}
a{
  color:inherit;
  text-decoration:none;
}
hr{
  margin:1cm 0;
  height:0;
  border:0;
  border-top:1mm solid var(--highlight-color);
}
header{
  height:8cm;
  padding:0 2cm;
  position:running(header);
  background-color:var(--header-bg-color);
}
header .headerSection{
  display:flex;
  justify-content:space-between;
}
header .headerSection:first-child{
  padding-top:.5cm;
}
header .headerSection:last-child{
  padding-bottom:.5cm;
}
header .headerSection div:last-child{
  width:35%;
}
header .logoAndName{
  display:flex;
  align-items:center;
  justify-content:space-between;
}
header .logoAndName svg{
  width:1.5cm;
  height:1.5cm;
  margin-right:.5cm;
}
header .headerSection .invoiceDetails{
  padding-top:.5cm;
}
header .headerSection h3{
  margin:0 .75cm 0 0;
  color:var(--highlight-color);
}
header .headerSection div:last-of-type h3:last-of-type{
  margin-top:.5cm;
}
header .headerSection div p{
  margin-top:2px;
}
header h1,
header h2,
header h3,
header p{
  margin:0;
}
header .invoiceDetails,
header .invoiceDetails h2{
  text-align:right;
  font-size:1em;
  text-transform:none;
}
header h2,
header h3{
  text-transform:uppercase;
}
header hr{
  margin:1cm 0 .5cm 0;
}
main table{
  width:100%;
  border-collapse:collapse;
}
main table thead th{
  height:1cm;
  color:var(--highlight-color);
}
main table thead th:nth-of-type(2),
main table thead th:nth-of-type(3),
main table thead th:last-of-type{
  width:2.5cm;
}
main table tbody td{
  padding:2mm 0;
}
main table thead th:last-of-type,
main table tbody td:last-of-type{
  text-align:right;
}
main table th{
  text-align:left;
}
main table.summary{
  width:calc(40% + 2cm);
  margin-left:60%;
  margin-top:.5cm;
}
main table.summary tr.total{
  font-weight:bold;
  background-color:var(--highlight-color);
}
main table.summary th{
  padding:4mm 0 4mm 1cm;
}
main table.summary td{
  padding:4mm 2cm 4mm 0;
  border-bottom:0;
}
aside{
  -prince-float: bottom;
  padding:0 2cm .5cm 2cm;
}
aside > div{
  display:flex;
  justify-content:space-between;
}
aside > div > div{
  width:45%;
}
aside > div > div ul{
  list-style-type:none;
  margin:0;
}
footer{
  height:3cm;
  line-height:3cm;
  padding:0 2cm;
  position:running(footer);
  background-color:var(--footer-bg-color);
  font-size:8pt;
  display:flex;
  align-items:baseline;
  justify-content:space-between;
}
footer a:first-child{
  font-weight:bold;
}
</style>
<header>
  <div class="headerSection">
    <div class="logoAndName">
      <h1>Questetra</h1>
    </div>
    <div class="invoiceDetails">
      <h2>Invoice ##{#escaper.escapeHtml(#q_invoice_id)}</h2>
      <p>
        #{#q_issue_date}
      </p>
    </div>
  </div>
  <hr />
  <div class="headerSection">
    <div>
      <h3>Invoice to</h3>
      <p>
        <b>#{#escaper.escapeHtml(#q_billing_name)}</b>
        <br />
        #{#joiner.splitJoin(#escaper.escapeHtml(#q_billing_address), '<br>')}
        <br />
        <a href="mailto:#{#escaper.escapeHtml(#q_billing_email)}">
          #{#escaper.escapeHtml(#q_billing_email)}
        </a>
      </p>
    </div>
    <div>
      <h3>Due Date</h3>
      <p>
        <b>#{#dateFormatter.format('dd MM yyyy', #q_due_date)}</b>
      </p>
      <h3>Amount</h3>
      <p>
        <b>¥#{#q_total}</b>
      </p>
    </div>
  </div>
</header>
<footer>
    <a href="https://questetra.com">
      questetra.com
    </a>
    <a href="mailto:customer-sevice@questetra.com">
      customer-sevice@questetra.com
    </a>
    <span>
      206 Takamiya-cho Oike Bldg. 4th Fl. Nakagyo-ku Kyoto 604-0835 JAPAN
    </span>
</footer>
<main>
  <table>
    <thead>
      <tr>
        <th>Item Description</th>
        <th>Rate</th>
        <th>Amount</th>
        <th>Total</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>
          <b>#{#escaper.escapeHtml(#q_item_name1)}</b>
          <br />
          #{#escaper.escapeHtml(#q_remark1)}
        </td>
        <td>
          #{#q_unit1}
        </td>
        <td>
          #{#q_quantity1}
        </td>
        <td>
          #{#q_price1}
        </td>
      </tr>
      <tr>
        <td>
          <b>#{#escaper.escapeHtml(#q_item_name2)}</b>
          <br />
          #{#escaper.escapeHtml(#q_remark2)}
        </td>
        <td>
          #{#q_unit2}
        </td>
        <td>
          #{#q_quantity2}
        </td>
        <td>
          #{#q_price2}
        </td>
      </tr>
      <tr>
        <td>
          <b>#{#escaper.escapeHtml(#q_item_name3)}</b>
          <br />
          #{#escaper.escapeHtml(#q_remark3)}
        </td>
        <td>
          #{#q_unit3}
        </td>
        <td>
          #{#q_quantity3}
        </td>
        <td>
          #{#q_price3}
        </td>
      </tr>
    </tbody>
  </table>
  <table class="summary">
    <tr>
      <th>
        Subtotal
      </th>
      <td>
        #{#q_subtotal}
      </td>
    </tr>
    <tr>
      <th>
        Tax
      </th>
      <td>
        #{#q_tax}
      </td>
    </tr>
    <tr class="total">
      <th>
        Total
      </th>
      <td>
        #{#q_total}
      </td>
    </tr>
  </table>
</main>
<aside>
  <hr />
  <div>
    <div>
      <b>Terms & Conditions</b>
      <p>
        Please make payment within 30 days of issue of the invoice.
      </p>
    </div>
    <div>
      <b>Payment Options</b>
      <ul>
        <li>Paypal</li>
        <li>Credit Card</li>
      </ul>
    </div>
  </div>
</aside>