@import "reset-to-defaults.css"; @keyframes foo { 0% { text-shadow: 20px 20px tomato; } 100% { text-shadow: 20px 20px tomato; } } GtkLabel { font-size: 40px; animation-name: foo; animation-duration: 100s; animation-timing-function: linear; animation-delay: 1ms; } .reference { animation: initial; text-shadow: 20px 20px tomato; }