Why is "0" not valid?

• From: Tomáš <money@centrum.cz>
• Date: Tue, 28 Mar 2017 11:36:53 +0200
• To: www-validator-css@w3.org
• Message-Id: <B67DBF06-684B-4A11-B2DF-955B26328476@centrum.cz>

0 errors:
======

@keyframes scale-nonstop {
  0% {
    transform: scale(1.2)
  }
  50% {
    transform: scale(1)
  }
  100% {
    transform: scale(1.2)
  }
}

4 errors:
======

@keyframes scale-nonstop {
  0 {
    transform: scale(1.2)
  }
  50% {
    transform: scale(1)
  }
  100% {
    transform: scale(1.2)
  }
}

Why is "0" not valid?

Thanks,
Tomas

Received on Tuesday, 28 March 2017 13:14:35 UTC