palladium/docs/stylesheets/doxide.css

:root {
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  --md-admonition-icon--function: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M15.6 5.29c-1.1-.1-2.07.71-2.17 1.82L13.18 10H16v2h-3l-.44 5.07a3.986 3.986 0 0 1-4.33 3.63 4.007 4.007 0 0 1-3.06-1.87l1.5-1.5c.24.74.9 1.31 1.73 1.38 1.1.1 2.07-.71 2.17-1.82L11 12H8v-2h3.17l.27-3.07c.19-2.2 2.13-3.83 4.33-3.63 1.31.11 2.41.84 3.06 1.87l-1.5 1.5c-.24-.74-.9-1.31-1.73-1.38Z"/></svg>');
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  --md-admonition-icon--macro: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="m5.41 21 .71-4h-4l.35-2h4l1.06-6h-4l.35-2h4l.71-4h2l-.71 4h6l.71-4h2l-.71 4h4l-.35 2h-4l-1.06 6h4l-.35 2h-4l-.71 4h-2l.71-4h-6l-.71 4h-2M9.53 9l-1.06 6h6l1.06-6h-6Z"/></svg>');
}

.md-typeset .admonition.variable, .md-typeset details.variable,
.md-typeset .admonition.function, .md-typeset details.function,
.md-typeset .admonition.typedef, .md-typeset details.typedef,
.md-typeset .admonition.concept, .md-typeset details.concept,
.md-typeset .admonition.macro, .md-typeset details.macro {
  border-color: var(--md-default-fg-color--lighter);
}

.md-typeset .variable > .admonition-title, .md-typeset .variable > summary,
.md-typeset .function > .admonition-title, .md-typeset .function > summary,
.md-typeset .typedef > .admonition-title, .md-typeset .typedef > summary,
.md-typeset .concept > .admonition-title, .md-typeset .concept > summary,
.md-typeset .macro > .admonition-title, .md-typeset .macro > summary {
  background-color: var(--md-default-bg-color);
}

.md-typeset .variable > .admonition-title::before,
.md-typeset .variable > summary::before {
  background-color: var(--md-default-fg-color--light);
  -webkit-mask-image: var(--md-admonition-icon--variable);
          mask-image: var(--md-admonition-icon--variable);
}

.md-typeset .function > .admonition-title::before,
.md-typeset .function > summary::before {
  background-color: var(--md-default-fg-color--light);
  -webkit-mask-image: var(--md-admonition-icon--function);
          mask-image: var(--md-admonition-icon--function);
}

.md-typeset .typedef > .admonition-title::before,
.md-typeset .typedef > summary::before {
  background-color: var(--md-default-fg-color--light);
  -webkit-mask-image: var(--md-admonition-icon--typedef);
          mask-image: var(--md-admonition-icon--typedef);
}

.md-typeset .concept > .admonition-title::before,
.md-typeset .concept > summary::before {
  background-color: var(--md-default-fg-color--light);
  -webkit-mask-image: var(--md-admonition-icon--concept);
          mask-image: var(--md-admonition-icon--concept);
}

.md-typeset .macro > .admonition-title::before,
.md-typeset .macro > summary::before {
  background-color: var(--md-default-fg-color--light);
  -webkit-mask-image: var(--md-admonition-icon--macro);
          mask-image: var(--md-admonition-icon--macro);
}