Baseline Widely available
CSSKeyframeRule
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@keyframes slide-in {
from {
transform: translateX(0%);
}
}
let myRules = document.styleSheets[0].cssRules;
let keyframes = myRules[0]; // CSSKeyframesRule
keyframes.appendRule("to {transform: translateX(100%);}");
console.log(keyframes.cssRules); // å
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