style single post template

assets/css/custom.css

@@ -81,4 +81,17 @@ ul.wp-block-navigation.mobile-header-nav li {
   .site-footer ul.is-style-arrow li {
     font-size: 18px !important;
   }
+}
+
+/* styling blog post template */
+.post-content-container {
+  width: fit-content;
+}
+
+.post-header {
+  max-width: 1480px;
+}
+
+.post-bio-container {
+  max-width: 640px;
 }

templates/single.html

@@ -0,0 +1,7 @@
+<!-- wp:template-part {"slug":"header"} /-->
+
+<!-- wp:group {"style":{"spacing":{"padding":{"top":"0","bottom":"0"},"margin":{"top":"0","bottom":"0"}}},"layout":{"type":"default"}} -->
+<div class="wp-block-group" style="margin-top:0;margin-bottom:0;padding-top:0;padding-bottom:0"><!-- wp:post-content /--></div>
+<!-- /wp:group -->
+
+<!-- wp:template-part {"slug":"footer","area":"footer"} /-->

theme.json

@@ -67,7 +67,8 @@
 			"wideSize": "1760px"
 		},
 		"typography": {
-			"fluid": true,
+			"defaultFontSizes": false,
+			"fluid": false,
 			"fontFamilies": [
 				{
 					"fontFace": [
@@ -281,7 +282,7 @@
 							"fontFamily": "Instrument Sans SemiCondensed",
 							"fontStyle": "normal",
 							"fontWeight": "700",
-							"src": "file:./assets/fonts/instrument-sans/InstrumentSansSemiCondensed-Bold.otf"
+							"src": "file:./assets/fonts/instrument-sans/semicondensed/InstrumentSansSemiCondensed-Bold.otf"
 						},
 						{
 							"fontFamily": "Instrument Sans SemiCondensed",
@@ -507,10 +508,6 @@
 					"slug": "xx-large"
 				},
 				{
-					"fluid" : {
-						"min": "43px",
-						"max": "54px"
-					},
 					"name": "Huge",
 					"size": "54px",
 					"slug": "huge"
@@ -520,6 +517,9 @@
 		"useRootPaddingAwareAlignments": true
 	},
 	"styles": {
+		"color": {
+			"background": "var(--wp--preset--color--white)"
+		},
 		"blocks": {
 			"core/button": {
 				"border": {