Mastering the Art of CSS Flexbox Layouts
h1 { color: #333; font-size: 28px; margin-bottom: 20px; font-weight: 600; } h2 { color: #333; font-size: 24px; margin-bottom: 15px; font-weight: 500; } h3 { color: #333; font-size: 20px; margin-bottom: 10px; font-weight: 400; } p { color: #666; font-size: 16px; line-height: 1.