23 lines
378 B
HTML
23 lines
378 B
HTML
<iframe id=frame srcdoc="
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<style>
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body { background-color: red }
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@media (min-width:400px) {
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body { background-color: green }
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@keyframes fade {
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0% { opacity: 0; }
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100% { opacity: 1; }
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}
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}
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</style>
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Test frame
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"></iframe>
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<script>
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frame.onload = () => {
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frame.width = 100;
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frame.contentDocument.offsetWidth;
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frame.width = 500;
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}
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</script>
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