My requirement: H1: 30px H2: 28px H3: 26px H4: 24px H5: 22px H6: 20px I tried changing the values in Administer wiki > Presentation > Color theme Customize > Less code as follows // XWiki already overrides these variables @font-size-base: 18px; @font-size-large: ceil((@font-size-base * 1.25)); // ~18px @font-size-small: ceil((@font-size-base * 0.85)); // ~12px @font-size-h1: 30px; @font-size-h2: 28px; @font-size-h3: 26px; @font-size-h4: 24px; @font-size-h5: 22px; @font-size-h6: 20px; Now it correctly shows font-sizes 20px to 30px. But it automatically sets different font-size values for 22px, 26px sizes incorrectly. Also what does "// XWiki already overrides these variables " mean? Is this the culprit for the problem? -- View this message in context: http://xwiki.475771.n2.nabble.com/Setting-default-font-size-for-Headings-tp… Sent from the XWiki- Users mailing list archive at Nabble.com.