<p>This service worker is composed of three steps, which we succinctly describe below.</p>
<div id="installation" class="section level4" number="24.2.3.1">
<h4>
<span class="header-section-number">24.2.3.1</span> Installation<a class="anchor" aria-label="anchor" href="#installation"><i class="fas fa-link"></i></a>
</h4>
<p>During the <strong>installation</strong> step, the cache is initialized and assets like HTML page (<code>offline.html</code>), CSS, JS and images are asynchronously cached. Assets’s res