The template
This is the whole thing — an HTML page with {{ }} bindings. Nothing is
generated from a designer format; what you see here is what the engine renders.
template.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<!-- Stylesheets, scripts and fonts go here. Every page of this report gets them. -->
<link rel="stylesheet" href="assets/css/report.css">
</head>
<body>
<!--
The report's data, as JSON, for chart and script code to read:
const model = JSON.parse(document.getElementById('report-data').textContent);
Here rather than in a page because the data belongs to the report: this file is merged into
every page, so writing it once puts a copy in each. This invoice draws nothing in script, but
the island stays: it costs a line, and it is the sanctioned route the moment one is needed.
-->
<script id="report-data" type="application/json">{{json}}</script>
<!--
The masthead. Fixed to the top of every sheet by the engine, so a long invoice carries it onto
the second sheet without the page having to repeat it. This file says what it holds; the
stylesheet says what it looks like and .sheet's top padding reserves the band it draws into.
-->
<template id="report-header">
<header class="masthead">
<div class="issuer">
<h1>{{seller.name}}</h1>
<p>{{seller.tagline}}</p>
</div>
<div class="docref">
<span class="doctype">Invoice</span>
<span class="docno">{{invoice.number}}</span>
</div>
</header>
</template>
<!--
The footer is drawn by the browser rather than placed in the page, because it is the only way
to print a page number. It is styled from this report's stylesheet, but it will not paint a
background or draw an image — so it is text, and the logo stays in the masthead above.
-->
<template id="report-footer">
<div class="pagefoot">
<span class="mark">{{seller.name}}</span>
<span>{{invoice.number}} — account {{customer.account}}</span>
<span>Page <span class="pageNumber"></span> of <span class="totalPages"></span></span>
</div>
</template>
</body>
</html>
What it carries
Stylesheets, scripts, images and fonts travel inside the report, so nothing is resolved from the outside while it renders.
assets/css/report.css