lotte css uses CSS variables to define typography properties like font families, sizes, and weights.
:root {
/* Font families */
--font-family-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont,
'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans',
'Helvetica Neue', sans-serif;
--font-family-mono: 'IBM Plex Mono', Menlo, Monaco, Consolas,
'Liberation Mono', 'Courier New', monospace;
/* Font sizes */
--font-size-base: 1rem;
--font-size-sm: 0.875rem;
--font-size-lg: 1.125rem;
--font-size-xl: 1.25rem;
/* Line heights */
--line-height-base: 1.5;
--line-height-heading: 1.2;
}