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CSS Safe Area Insets Generator

Create padding, margin, or position offset rules using env(safe-area-inset-*) with a fallback value.

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What is CSS Safe Area Insets Generator?

Safe-area insets are CSS environment variables that help keep content away from phone notches, rounded screen corners, home indicator areas, and other display cutouts. They are useful for mobile web apps, fixed headers, sticky bottom bars, and full-bleed layouts.

How to use this tool

  1. Choose whether you want to generate padding, margin, or inset rules.
  2. Set a fallback value for browsers and screens that do not need special safe-area spacing.
  3. Enter the selector that should receive the safe-area spacing.
  4. Copy the meta viewport tag and CSS into your page, then test on a mobile device or simulator.

What you can use it for

  • Keep fixed headers and bottom bars away from screen cutouts.
  • Add safe padding to mobile web apps.
  • Create reusable CSS variables for safe-area spacing.

Use cases

Practical examples

Example

Sticky mobile bottom bar

A mobile site has a bottom navigation bar. Safe-area padding keeps the buttons above the home indicator on modern phones.

Example

Full-width app shell

A browser-based tool uses a full-bleed layout. Safe-area variables prevent content from touching the notch or rounded screen edges.

Common mistakes

  • Using safe-area variables without a fallback.
  • Applying inset padding on desktop layouts where it is not needed.
  • Forgetting viewport-fit=cover when testing full-screen mobile layouts.

FAQ

Questions about CSS Safe Area Insets Generator

Do safe-area variables work on every browser?

Support is strongest where display cutouts matter. Always include fallback spacing so layouts remain usable elsewhere.

Why is viewport-fit=cover included?

It allows the page to extend into the full visual viewport on supported mobile browsers, which makes safe-area spacing meaningful.

Should I apply safe-area padding to the whole page?

Usually no. Apply it to fixed bars, app shells, or sections that need edge protection.

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