:root
{
    --font-title: 'Source Sans Pro', 'Segoe UI Emoji', sans-serif;
}

.cm-header-1.cm-header-1,
.markdown-preview-section.markdown-preview-section h1 {
    font-weight: 700;
    font-size: 32px;
}

.cm-formatting.cm-formatting-header {
    font-size: 1rem;
    font-family: var(--font-default);
    filter: brightness(1.5);
}