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fix(web): let HTML pages fill the full viewport #20

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Merged
alextnetto merged 1 commit into from
May 16, 2026
Merged

fix(web): let HTML pages fill the full viewport #20

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3 changes: 2 additions & 1 deletion apps/web/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -56,7 +56,8 @@
margin: 0 auto;
padding: var(--bb-grid-size-6) var(--bb-grid-size-3);
}
#app.is-home {
#app.is-home,
#app.is-html {
max-width: none;
margin: 0;
padding: 0;
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7 changes: 7 additions & 0 deletions apps/web/main.ts
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Expand Up @@ -283,6 +283,13 @@ class AgentUIApp extends SignalWatcher(LitElement) {
// HTML pages are pre-sanitized server-side. We trust the byte-string
// and wrap it in a sandboxed iframe. The iframe is opaque-origin and
// JS-free; nothing it does can reach back into this shell.
//
// The shell's #app container has a 640px max-width cap (set in
// index.html for A2UI/landing layouts). HTML pages are meant to fill
// the full viewport like a normal webpage, so we flip the `is-html`
// class on #app to clear the cap — same escape hatch the home page
// uses via `is-home`.
document.getElementById('app')?.classList.add('is-html');
this.htmlBody = typeof page.spec === 'string' ? page.spec : '';
this.status = 'live';
return;
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