That's also been one of my biggest CSS wishlist items for years.
I've had dozens of clients complain about headings wrapping onto the next line when they add one too many letters, and ask if we can make the font size smaller without affecting the others. There are several ways to accomplish that, but they're all annoying compared to a theoretical one-line CSS solution like:
font-size: 12-18px 400px;
Or something of that nature that could hopefully do it automatically.
I've had dozens of clients complain about headings wrapping onto the next line when they add one too many letters, and ask if we can make the font size smaller without affecting the others. There are several ways to accomplish that, but they're all annoying compared to a theoretical one-line CSS solution like:
font-size: 12-18px 400px;
Or something of that nature that could hopefully do it automatically.