Non-@container at-rules are being processed

[ZeeCoder]

This:

@keyframes Expand{
    0%{
        transform: scale(1);
        opacity: 1;
    }
    25%{
        opacity: 1;
    }
    50%, 100%{
        transform: scale(2);
        opacity: 0;
    }
}

Produces something like this, in the JSON:

{
    "selector": ".Expand.Two",
    "styles": {}
}, {
    "selector": ".Expand.Three",
    "styles": {}
}, {
    "selector": "from",
    "styles": {}
}, {
    "selector": "to",
    "styles": {}
}, {
    "selector": "0%",
    "styles": {}
}, {
    "selector": "25%",
    "styles": {}
}, {
    "selector": "50%, 100%",
    "styles": {}
}

Which breaks things.

[ZeeCoder]

Idea for a fix: check all rules' parent, and only process it if it's either a rule without a parent, or if it's parent a @media or @container query.
Ignore everything else.