Master's degrees | Courses | LSHTM

Visas and immigration | Study with us | LSHTM

Accessibility | LSHTM

London life | New students | LSHTM

Cookies | LSHTM

Contact us | LSHTM

Ways of giving | Support us | LSHTM

Features | LSHTM

Faculty of Epidemiology and Population Health | Faculties and MRC units | LSHTM

Study skills | New students | LSHTM

All interactive components on a page, such as buttons or menus, should be far enough apart 
from other interactive areas, to avoid them being used by mistake. 

This ensures people with motor impairments can easily click or tap on the right element.

## How to fix

* Ensure all interactive elements are at least 24 CSS pixels wide and tall
* OR ensure there is at least 24 CSS pixels (minus the width and height of the element)
  between each interactive element

## Methodology

This check is run on both the mobile and desktop versions of every page. Results
for each may differ.

1. All interactive elements are identified, including buttons, links, and form controls.
2. If an element is not normally visible, it is ignored. This includes elements which
   are positioned offscreen or cropped (e.g. for 'screen-reader only' text).
3. If an element is larger than 24 CSS pixels in both dimensions, it passes.
4. Otherwise, the element is compared to all other elements on the page.
5. The minimum horizontal gap between the element is calculated as 24 CSS pixels,  
   minus the width of the element.
6. The minimum vertical gap between the element is calculated as 24 CSS pixels,  
   minus the height of the element.
7. If another element falls within the minimum horizontal or vertical gap, the 
   element fails, unless both are links that point to the same place.

## Further reading

* [Target Size (Minimum)](https://www.w3.org/WAI/WCAG22/Understanding/target-size-minimum.html)
* [Technique C42 - Using min-height and min-width to ensure sufficient target spacing](https://www.w3.org/WAI/WCAG22/Techniques/css/C42)

ensure-minimum-target-size

December 2025

November 2025

London School of Hygiene & Tropical Medicine

	Title / URL	Issues
	Master's degrees \| Courses \| LSHTMwww.lshtm.ac.uk/study/courses/masters-degrees	27
	Visas and immigration \| Study with us \| LSHTMwww.lshtm.ac.uk/study/visas-and-immigration	24
	Accessibility \| LSHTMwww.lshtm.ac.uk/accessibility	18
	London life \| New students \| LSHTMwww.lshtm.ac.uk/study/new-students/london-life	16
	Cookies \| LSHTMwww.lshtm.ac.uk/cookies	15
	Contact us \| LSHTMwww.lshtm.ac.uk/aboutus/contact	13
	Ways of giving \| Support us \| LSHTMwww.lshtm.ac.uk/supportus/ways-giving	11
	Features \| LSHTMwww.lshtm.ac.uk/research/research-action/features	10
	Faculty of Epidemiology and Population Health \| Faculties and MRC units \| LSHTMwww.lshtm.ac.uk/research/faculties/eph	10
	Study skills \| New students \| LSHTMwww.lshtm.ac.uk/study/new-students/study-skills	9

Ensure interactive components are far enough apart

London School of Hygiene & Tropical Medicine

Where this issue has occurred