Custom browser styles

styles.css

/* Add a gradient to GH labels */
:root .hx_IssueLabel,
[data-color-mode=light][data-light-theme*=light] .hx_IssueLabel,
[data-color-mode=dark][data-dark-theme*=light] .hx_IssueLabel {
    --lightness-threshold: 0.7 !important;
    --triad1: hsl(
        calc(var(--label-h) + 10),
        calc(var(--label-s) * 1%),
        calc(var(--label-l) * 1%)
    );
    --triad2: hsl(
        calc(var(--label-h) - 10),
        calc(var(--label-s) * 1%),
        calc(var(--label-l) * 1%)
    );
    background: linear-gradient(45deg, var(--triad1) 0%, var(--triad2) 100%) !important;
}