Click between two letters to select a pair. Keyboard: ← → choose the pair, Alt+← → or ↑ ↓ adjust by 10 (add Shift for 50), Delete resets it.
0/1000 em = 0% in Figma = letter-spacing: 0
.headline {
font-family: "Playfair Display", serif;
font-size: 88px;
font-weight: 700;
line-height: 1.15;
}