Popup content fully visible and usable at default browser zoom levels

Clipped popup content at default browser zoom hides primary actions — Save, Submit, Close — behind invisible overflow. Users on 125% zoom (the OS default on high-DPI Windows laptops and standard for low-vision users covered by WCAG 2.2 SC 1.4.4 Resize Text) hit dead ends where the save button renders below a fixed 200px container with overflow: hidden. The extension appears broken, reviews drop, and uninstalls spike. Accessibility compliance also fails when resized text gets cropped instead of reflowing.

Replace fixed heights and overflow: hidden with a bounded, scrollable body. Set an explicit width, cap height with max-height, and let content reflow with overflow-y: auto. In popup.html:

body {
  width: 360px;
  min-height: 100px;
  max-height: 600px;
  overflow-y: auto;
  box-sizing: border-box;
}

Use rem units for text so browser zoom scales correctly.