diff --git a/tt1-blocks/assets/css/blocks.css b/tt1-blocks/assets/css/blocks.css
index 7e20b55..5e656fc 100644
--- a/tt1-blocks/assets/css/blocks.css
+++ b/tt1-blocks/assets/css/blocks.css
@@ -231,10 +231,14 @@ hr.is-style-twentytwentyone-separator-thick,
 # Site Title
 --------------------------------------------------------------*/
 
-h1.wp-block-site-title {
-	font-weight: var(--wp--custom--font-weight-normal);
-}
-
 h1.wp-block-site-title a:not(:hover):not(:focus):not(:active) {
 	text-decoration: none;
 }
+
+/*--------------------------------------------------------------
+# Single view Post Title
+--------------------------------------------------------------*/
+
+h1.wp-block-post-title {
+	font-weight: var(--wp--custom--font-weight--light);
+}
diff --git a/tt1-blocks/experimental-theme.json b/tt1-blocks/experimental-theme.json
index 3364476..7b4d19e 100644
--- a/tt1-blocks/experimental-theme.json
+++ b/tt1-blocks/experimental-theme.json
@@ -188,6 +188,10 @@
 					"unit": "20px",
 					"horizontal": "25px",
 					"vertical": "30px"
+				},
+				"font-weight":{
+					"light": "300",
+					"normal": "normal"
 				}
 			}
 		}
@@ -207,19 +211,22 @@
 		"core/heading/h1": {
 			"typography": {
 				"fontSize": "var(--wp--preset--font-size--gigantic)",
-				"lineHeight": "var(--wp--custom--line-height--page-title)"
+				"lineHeight": "var(--wp--custom--line-height--page-title)",
+				"fontWeight": "var(--wp--custom--font-weight--normal)"
 			}
 		},
 		"core/heading/h2": {
 			"typography": {
 				"fontSize": "var(--wp--preset--font-size--extra-large)",
-				"lineHeight": "var(--wp--custom--line-height--heading)"
+				"lineHeight": "var(--wp--custom--line-height--heading)",
+				"fontWeight": "var(--wp--custom--font-weight--normal)"
 			}
 		},
 		"core/heading/h3": {
 			"typography": {
 				"fontSize": "calc(1.25 * var(--wp--preset--font-size--large))",
-				"lineHeight": "var(--wp--custom--line-height--heading)"
+				"lineHeight": "var(--wp--custom--line-height--heading)",
+				"fontWeight": "var(--wp--custom--font-weight--normal)"
 			}
 		},
 		"core/heading/h4": {
@@ -273,6 +280,7 @@
 		"core/site-title": {
 			"typography": {
 				"fontSize": "var(--wp--preset--font-size--large)",
+				"fontWeight": "var(--wp--custom--font-weight--normal)",
 				"textTransform": "uppercase"
 			}
 		}