car-game/extensions/cocos-service/builtin/builtin-browser/popup/popup.html

<div class="browser fit">
    <header id="navBar">
        <ui-icon value="prev-play" id="prev"></ui-icon>
        <ui-icon value="next-play" id="next"></ui-icon>
        <ui-icon value="refresh" id="refresh"></ui-icon>
        <ui-icon value="home" id="home"></ui-icon>
        <ui-icon value="dev-tools" id="devtools" class="more"></ui-icon>
    </header>
    <section>
        <webview id="webview"></webview>
    </section>
</div>