{
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          }
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          "spec_url": "https://drafts.csswg.org/scroll-animations/#dom-viewtimeline-endoffset",
          "tags": [
            "web-features:scroll-driven-animations"
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          "spec_url": "https://drafts.csswg.org/scroll-animations/#dom-viewtimeline-startoffset",
          "tags": [
            "web-features:scroll-driven-animations"
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          "spec_url": "https://drafts.csswg.org/scroll-animations/#dom-viewtimeline-subject",
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}