Back in the old days, we couldn't do something like that:

.foo {
  position: absolute;
  bottom: 0;
  /* This was bad: */
  left: 10px;
  right: 10px;
}

Rails Long Term Support

Rails LTS provides security patches for old versions of Ruby on Rails (2.3, 3.2, 4.2 and 5.2)

• Prevents you from data breaches and liability risks
• Upgrade at your own pace
• Works with modern Rubies

Read more Show archive.org snapshot

Why? Because IE5 and IE6 (which a majority of people used back then) failed horribly trying to render it.

I've now checked if this is still an issue with any browser that's not from the stone age. \
Turns out all is well -- except if you have to support IE6 and below, but then you're in some other kinds of trouble.

It works in all sane browsers, and Internet Explorer 7, 8, 9, and 10. \
So go ahead and use it. It's long overdue! ;)

You can find the example that I tested on jsFiddle Show archive.org snapshot .