extensions/simple-browser/src/simpleBrowserView.ts/SimpleBrowserView/getHtml
class SimpleBrowserView:	private getHtml(url: string) {
		const configuration = vscode.workspace.getConfiguration('simpleBrowser');

		const nonce = getNonce();

		const mainJs = this.extensionResourceUrl('media', 'index.js');
		const mainCss = this.extensionResourceUrl('media', 'main.css');
		const codiconsUri = this.extensionResourceUrl('media', 'codicon.css');

		return /* html */ `<!DOCTYPE html>
			<html>
			<head>
				<meta http-equiv="Content-type" content="text/html;charset=UTF-8">

				<meta http-equiv="Content-Security-Policy" content="
					default-src 'none';
					font-src ${this._webviewPanel.webview.cspSource};
					style-src ${this._webviewPanel.webview.cspSource};
					script-src 'nonce-${nonce}';
					frame-src *;
					">

				<meta id="simple-browser-settings" data-settings="${escapeAttribute(JSON.stringify({
			url: url,
			focusLockEnabled: configuration.get<boolean>('focusLockIndicator.enabled', true)
		}))}">

				<link rel="stylesheet" type="text/css" href="${mainCss}">
				<link rel="stylesheet" type="text/css" href="${codiconsUri}">
			</head>
			<body>
				<header class="header">
					<nav class="controls">
						<button
							title="${localize('control.back.title', "Back")}"
							class="back-button icon"><i class="codicon codicon-arrow-left"></i></button>

						<button
							title="${localize('control.forward.title', "Forward")}"
							class="forward-button icon"><i class="codicon codicon-arrow-right"></i></button>

						<button
							title="${localize('control.reload.title', "Reload")}"
							class="reload-button icon"><i class="codicon codicon-refresh"></i></button>
					</nav>

					<input class="url-input" type="text">

					<nav class="controls">
						<button
							title="${localize('control.openExternal.title', "Open in browser")}"
							class="open-external-button icon"><i class="codicon codicon-link-external"></i></button>
					</nav>
				</header>
				<div class="content">
					<div class="iframe-focused-alert">${localize('view.iframe-focused', "Focus Lock")}</div>
					<iframe sandbox="allow-scripts allow-forms allow-same-origin"></iframe>
				</div>

				<script src="${mainJs}" nonce="${nonce}"></script>
			</body>
			</html>`;
	}