Latest news, sport and opinion from the Guardian

<ul> and <ol> must only directly contain <li>, <script> or <template> elements

Ensure that lists are structured correctly

<ul> and <ol> must only directly contain <li>, <script> or <template> elements

Ensure that lists are structured correctly

<li> elements must be contained in a <ul> or <ol>

Ensure <li> elements are used semantically

Aside should not be contained in another landmark

Ensure the complementary landmark or aside is at top level

Aside should not be contained in another landmark

Ensure the complementary landmark or aside is at top level

Landmarks should have a unique role or role/label/title (i.e. accessible name) combination

Ensure landmarks are unique

All page content should be contained by landmarks

Ensure all page content is contained by landmarks

All page content should be contained by landmarks

Ensure all page content is contained by landmarks

ARIA role should be appropriate for the element

Ensure role attribute has an appropriate value for the element

ARIA role should be appropriate for the element

Ensure role attribute has an appropriate value for the element

ARIA role should be appropriate for the element

Ensure role attribute has an appropriate value for the element

ARIA role should be appropriate for the element

Ensure role attribute has an appropriate value for the element

ARIA role should be appropriate for the element

Ensure role attribute has an appropriate value for the element

ARIA role should be appropriate for the element

Ensure role attribute has an appropriate value for the element

ARIA role should be appropriate for the element

Ensure role attribute has an appropriate value for the element