National Bureau of Economic Research | NBER

<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

All touch targets must be 24px large, or leave sufficient space

Ensure touch targets have sufficient size and space

All touch targets must be 24px large, or leave sufficient space

Ensure touch targets have sufficient size and space

All touch targets must be 24px large, or leave sufficient space

Ensure touch targets have sufficient size and space

All touch targets must be 24px large, or leave sufficient space

Ensure touch targets have sufficient size and space

All touch targets must be 24px large, or leave sufficient space

Ensure touch targets have sufficient size and space

All touch targets must be 24px large, or leave sufficient space

Ensure touch targets have sufficient size and space

Heading levels should only increase by one

Ensure the order of headings is semantically correct