chromium/third_party/blink/web_tests/http/tests/devtools/elements/styles/resources/keyframes.css

#element {
    animation: animName 1s 2s, mediaAnim 2s, doesNotExist 3s, styleSheetAnim 0s;
}

@keyframes styleSheetAnim {
    from {
        padding-left: 100px;
    }
    10% {
        padding-left: 150px;
    }
    100% {
        padding-left: 200px;
    }
}

@media (min-width: 1px) {
    @keyframes mediaAnim {
        from {
            opacity: 0;
        }
        to {
            opacity: 1;
        }
    }
}