Looks like a duck, quacks like a duck, but it's really a goose
appearance

The appearance property changes the appearance of custom HTML elements to resemble standard HTML elements.
Property values
This property is only recognzed by Chrome-based browsers. It must be one of these keyword values:
none |
button |
button-bevel |
caps-lock-indicator |
caret |
checkbox |
listbox |
listitem |
menulist |
menulist-button |
menulist-text |
menulist-textfield |
push-button |
radio |
scrollbarbutton-up |
scrollbarbutton-down |
scrollbarbutton-left |
scrollbarbutton-right |
scrollbartrack-horizontal |
scrollbartrack-vertical |
scrollbarthumb-horizontal |
scrollbarthumb-vertical |
scrollbargripper-horizontal |
scrollbargripper-vertical |
searchfield |
searchfield-decoration |
searchfield-results-decoration |
searchfield-results-button |
searchfield-cancel-button |
slider-horizontal |
slider-vertical |
sliderthumb-horizontal |
sliderthumb-vertical |
square-button |
textarea |
textfield |
Examples
appearance: textarea;