fix: tidier specificity lower of default project types

Author: lee-chase

src/layouts/page-layout.scss

@@ -41,9 +41,38 @@
   @include carbon-content-overrides;
 }
 
-.cs--page-layout-content {
+@mixin default-project-type() {
+  h1,
+  dd {
+    @include type-style('heading-07');
+
+    margin-block-end: $spacing-08;
+  }
+
+  h3 {
+    margin-block-end: $spacing-05;
+  }
+
+  p,
+  dt {
+    margin-block-end: $spacing-05;
+    margin-inline-end: $spacing-08;
+  }
+
+  dt {
+    @include type-style('label-02');
+  }
+}
+
+:where(.cs--page-layout-content) {
+  // low specificity to make it easier to override defaults
   @include default-type;
 
+  // after Carbon default type
+  @include default-project-type;
+}
+
+.cs--page-layout-content {
   // These following styles size the content area and move the scroll
   // from the body to this content area
   block-size: calc(100vh - $spacing-09);

src/pages/_page-common.scss

@@ -8,11 +8,6 @@
 @use '@carbon/react/scss/grid' as *;
 @use '@carbon/react/scss/spacing' as *;
 @use '@carbon/react/scss/type' as *;
-@use '../page-common' as common;
-
-.cs--dashboard {
-  @include common.page-common;
-}
 
 .cs--dashboard__tile {
   margin-block: $spacing-05;

src/pages/dashboard/dashboard.scss

@@ -8,11 +8,6 @@
 @use '@carbon/react/scss/spacing' as *;
 @use '@carbon/react/scss/type' as *;
 @use '@carbon/react/scss/breakpoint' as *;
-@use '../page-common' as common;
-
-.cs--welcome {
-  @include common.page-common;
-}
 
 .cs--welcome__about {
   margin-block-start: $spacing-07;