Reserve Monospaced Fonts for Short Blocks
Monospaced fonts reduce readability in long text: uniform letter widths disrupt reading rhythm. Use them only for code blocks, terminal output, and short stylistic elements. Never set body copy in a monospaced face.
Incorrect (monospace for body text):
body {
font-family: 'Fira Mono', monospace;
font-size: 16px;
}Correct (proportional for body, mono for code):
body {
font-family: 'Inter', sans-serif;
font-size: 18px;
}
code, pre {
font-family: 'Fira Code', 'Fira Mono', monospace;
font-size: 0.9em;
}Brief monospaced sections (a stylistic data readout, a hero element) are fine as a design choice; keep them short.