from fastapi import Request
STYLE = """
"""
def layout(request: Request, title: str, buttons: list[tuple[str, str]], header_html: str | None, body_html: str) -> str:
nav = " ".join(f"[{label}]" for label, href in buttons)
header = header_html if header_html is not None else f""
return f"""
{STYLE}
{header}
{body_html}
"""