<style> @keyframes hello { from { color: red; } to { color: orange; } } ::marker { animation: hello 1s infinite; color: green !important; } </style> <ul> <li>hello</li> </ul> --- The marker is green in Firefox & Chrome, animates from red to orange in WebKit.
<rdar://problem/84407795>
Note that this problem is not specific to pseudo elements.
*** This bug has been marked as a duplicate of bug 210963 ***