How to fix landmark one main on Shopify
Add a single `<main>` landmark element (or `role="main"`) to every page so that screen-reader users and assistive technologies can skip directly to the primary content.
Steps for Shopify
- Go to Online Store → Themes → Actions → Edit code.
- Open 'Layout' → `theme.liquid` (this is the master template wrapping every page).
- Locate the opening `<div>` (often `<div id="MainContent">` or similar) that wraps the `{{ content_for_layout }}` tag — this holds the unique page content.
- Change it to `<main id="main-content" role="main">` … `</main>`. If the `<div>` has important CSS classes, keep them: `<main id="main-content" role="main" class="your-existing-classes">`.
- Also add a skip link as the very first child of `<body>`: `<a class="skip-to-main visually-hidden" href="#main-content">Skip to main content</a>` and add CSS to make it visible on focus.
- Click Save, then test with the axe browser extension on any storefront page.
<main id="main-content" role="main">
<!-- All unique page content goes here -->
</main>
<!-- Skip link (add just after <body> opens): -->
<a href="#main-content" class="skip-link">Skip to main content</a>
<style>
.skip-link {
position: absolute;
left: -9999px;
top: auto;
width: 1px;
height: 1px;
overflow: hidden;
}
.skip-link:focus {
position: static;
width: auto;
height: auto;
}
</style>What is landmark one main?
Every web page should have one clearly marked "main content" region — the part of the page that is unique to that page, as opposed to the header, navigation, and footer that repeat everywhere. In HTML this is done with the `<main>` element (or by adding `role="main"` to a wrapper `<div>`). This marker is called a **landmark**. Screen readers and keyboard-only users rely on landmarks to jump around the page without having to tab through every single link and menu item first. The `landmark-one-main` rule fails when a page has zero `<main>` elements, or when it has more than one.
Without a main landmark, visually impaired shoppers using a screen reader (NVDA, JAWS, VoiceOver) cannot use the "skip to main content" shortcut — they are forced to listen to every navigation link on every page before reaching your products or checkout. This is a WCAG 2.1 Level A failure (Success Criterion 1.3.6 / ARIA Landmark Regions), meaning it carries legal accessibility risk in jurisdictions with web-accessibility laws (ADA, EN 301 549, EAA). Beyond compliance, a poor experience for assistive-technology users directly hurts conversions and brand trust. Fixing it is typically a one-line HTML change.
See the complete Landmark one main guide for every platform and the full background.
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