static/header.html

<div style="display: flex; align-items: center; gap: 12px;">
    <picture>
        <source srcset="/gradio_api/file=assets/ESP_logo_white.png"
                media="(prefers-color-scheme: dark)">
        <source srcset="/gradio_api/file=assets/esp_logo.png"
                media="(prefers-color-scheme: light)">
        <img src="/gradio_api/file=assets/esp_logo.png"
             alt="ESP Logo"
             style="height: 40px; width: auto;">
    </picture>
    <h2 style="margin: 0;">NatureLM-audio<span style="
        font-size: 0.55em; color: #28a745; background: #e6f4ea;
        padding: 2px 6px; border-radius: 4px; margin-left: 8px;
        display: inline-block; vertical-align: middle;"
    >v1.1</span></h2>
</div>