styles.css

:root {
    /* SVG spelling MDL (FiraCode Bold) */
    /* stylelint-disable-next-line function-url-scheme-disallowed-list */
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}

a.phpdebugbar-restore-btn:after {
    -webkit-mask-image: var(--local_devkit--mdl-icon);
    mask-image: var(--local_devkit--mdl-icon);
}

.phpdebugbar-icon-brand-moodle::before {
    -webkit-mask-image: var(--local_devkit--mdl-icon);
    mask-image: var(--local_devkit--mdl-icon);
}