Adam Wathan on Twitter: "This Safari 15.4 bug is pretty weird/brutal — button background colors don't work if the button has a border radius, is displayed using flexbox, has a transparent border,
css - Lines are showing in Safari when using border-radius - Stack Overflow
Conditional Border Radius In CSS - Ahmad Shadeed
css - Safari renders strange lines when using border-radius - Stack Overflow
Expanded Use of `box-shadow` and `border-radius` | Modern CSS Solutions
CodyHouse on Twitter: "🎉 Finally! The outline ring now (automatically) adapts to the element radius. In CSS: .outline { outline: 2px solid DarkOrchid; outline-offset: 2px; } It works in the latest releases
css - Border Radius not working in safari - Stack Overflow
Safari does not show "border" / "border-r… - Apple Community