<!DOCTYPE html> <meta charset="utf-8"> <title>CSS Reference</title> <style> .clamp { display: -webkit-box; -webkit-box-orient: vertical; font: 16px / 32px serif; white-space: pre; padding: 0 4px; background-color: yellow; } .child { font: 24px / 48px serif; color: blue; padding: 0 4px; } </style> <div class="clamp"><div>Line 1 Line 2<div class="child">Line 3 Line 4</div>Line 5…</div></div>