# EPUBCheck HTM_060a: EPUB reading systems must ignore…

Source: https://epublab.com/epubcheck/htm_060a/ (updated 2026-11-03)

EPUBCheck HTM_060a is a usage message: “EPUB reading systems must ignore secondary viewport meta elements in fixed-layout documents; viewport declaration "…" will be ignored.” A fixed-layout document has more than one viewport meta element; only the first counts and the others are ignored.

- Official message (EPUBCheck 5.4.0): EPUB reading systems must ignore secondary viewport meta elements in fixed-layout documents; viewport declaration "%1$s" will be ignored.
- Default severity: Usage

## Typical causes

- Duplicated head content from a template.

## How to fix it

- Remove the extra viewport meta elements.

Message text and severity: EPUBCheck (W3C, BSD-3-Clause). Explanation: EPUBLab.