Created attachment 435141 [details] Firefox-Safari-Chrome Steps to reproduce: visit https://codepen.io/mantou132/pen/qBmJGyX Actual results: text font-size is 16px; Expected results: font-size is 36px;
Thank you for filing. I can reproduce the bug on Safari 14.1.2 and latest Safari 15.
<rdar://problem/81855825>