<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Shadow DOM Example</title>
</head>
<body>
<script>
// Define the custom web component
class APP extends HTMLElement {
constructor() {
super();
// Attach a shadow root to the custom element
const shadowRoot = this.attachShadow({ mode: 'open' });
// Add custom markup and styles to the shadow root
shadowRoot.innerHTML = `
<style>
.shadow-content {
color: white;
background-color: black;
padding: 10px;
border-radius: 5px;
}
</style>
<div class="shadow-content">
This is content inside the shadow root of a web component.
</div>
`;
}
}
// Register the custom element
customElements.define('gale-app', APP);
</script>
<gale-app></gale-app>
</body>
</html>