test files
- a element
- button element
- buttons element
- checkbox
- checkbox states
- dialog element
- details element
- disabled elements
- fieldset element
- header element
- hr element
- iframe element
- image element
- image map
- many test cases in one page
- various input tests
- link element
- noscript element
- ol/ul/li elements
- output element
- menu/menuitem elements
- input type=number
- input range element
- picture element
- progress element
- radio
- required elements
- sectioning + main elements
- select element
- input with datalist
- readonly inputs
- required input