Radiology | Mount Sinai - New York

OBGYN & Reproductive Health Services NYC | Mount Sinai - New York

Our Locations | Mount Sinai - New York

Mount Sinai Health System - New York City | Mount Sinai - New York

About the Mount Sinai Health System | Mount Sinai - New York

Urological Care & Services NYC | Mount Sinai - New York

Clinical Ethics Consult Services | Mount Sinai - New York

Transplant Medicine & Organ Transplant Services | Mount Sinai - New York

ENT/Otolaryngology-Head and Neck Surgery NYC | Mount Sinai - New York

Surgery | Mount Sinai - New York

All controls on the page - including links, buttons, and fields - should show when 
they have been selected by the keyboard.

You can confirm this yourself by loading a webpage and using the Tab key to navigate 
through it. Anything you can select should alter its appearance when selected. 
For example, a text field might change color, or have a distinctive border applied. 

This is default behavior for all standard web controls, and so if this issue is appearing
it is because this default behavior has been disabled. Or alternatively, if you have written
your own custom controls, these will need styling to support focus states.

## How to fix

Links and form controls typically define an `outline` CSS style, which ensures
they are highlighted automatically, for example:

```css
input:focus (outline: 2px solid red);
``` 

If you choose to override or disable the default `outline`, you should specify an accessible 
alternative, such as a border or background color.

### Elements appear to change in the browser

Focus states should be defined in CSS alone, and not require JavaScript to work.

Try disabling JavaScript on the page, and see if focus is still visible. If it not,
then the focus state won't work with assistive technologies that don't have a physical
keyboard, e.g. mobile phones.

Some more unusual means of implementing a focus state cannot be detected or measured
automatically. These include:

* Focus implemented via pseudo-elements - such as `::after` or `::before`.
* Focus using `:focus-within` (JavaScript current provides no way to access these).
* Focus cascaded to child elements, e.g. a `<span>` inside an `<a>` tag. We detect
  some of these cases, but there are variations that we cannot detect.

Currently, there is no practical way to assess these focus states automatically.

### Unexpected elements are focusable

You may be surprised to see tags like `<div>` or `<span>` being shown as focusable.
If an element has a `tabindex` of 0 or higher, it becomes focusable. Any HTML tag can be made 
focusable in this way, this is so that custom controls (e.g. your own drop-down menus, or 
sliders) can support keyboard navigation. [Learn more about tabindex on MDN](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/tabindex).

## Further reading

* [WCAG 2.4.7](https://www.w3.org/WAI/WCAG22/Understanding/focus-visible.html)

ensure-focus-is-visible

August 2025

July 2025

Mount Sinai Health System

	Title / URL	Issues
	Radiology \| Mount Sinai - New Yorkwww.mountsinai.org/care/radiology	10
	OBGYN & Reproductive Health Services NYC \| Mount Sinai - New Yorkwww.mountsinai.org/care/obgyn	10
	Our Locations \| Mount Sinai - New Yorkwww.mountsinai.org/locations	10
	Mount Sinai Health System - New York City \| Mount Sinai - New Yorkwww.mountsinai.org/	10
	About the Mount Sinai Health System \| Mount Sinai - New Yorkwww.mountsinai.org/about	10
	Urological Care & Services NYC \| Mount Sinai - New Yorkwww.mountsinai.org/care/urology	10
	Clinical Ethics Consult Services \| Mount Sinai - New Yorkwww.mountsinai.org/about/ethics	10
	Transplant Medicine & Organ Transplant Services \| Mount Sinai - New Yorkwww.mountsinai.org/care/transplant	10
	ENT/Otolaryngology-Head and Neck Surgery NYC \| Mount Sinai - New Yorkwww.mountsinai.org/care/ent	10
	Surgery \| Mount Sinai - New Yorkwww.mountsinai.org/care/surgery	10

Ensure controls change appearance when they are selected

Mount Sinai Health System

Where this issue has occurred