```html
<div class="iframe-welcome-wrap undefined" tabindex="-1" style=""><div class="iframe-welcome-content"><form class="" action="http://172.16.0.81:9980/browser/e808afa229/welcome/welcome.html" target="iframe-welcome-form" method="get"><input class="" type="hidden" name="ui_theme" value="light"></form><iframe class="iframe-welcome-modal" name="iframe-welcome-form" title="欢迎对话框"></iframe></div></div>
```

