Account for bold italic paragraph font weight.

seedlet/assets/css/fonts.css

@@ -36,5 +36,12 @@
   font-family: 'Fira Sans';
   font-display: swap;
   font-style: italic;
-  font-weight: 100 900;
+  font-weight: 100 400;
   src: url("../fonts/Fira_Sans/FiraSans-Italic.ttf") format("truetype"); }
+
+@font-face {
+  font-family: 'Fira Sans';
+  font-display: swap;
+  font-style: italic;
+  font-weight: 500 900;
+  src: url("../fonts/Fira_Sans/FiraSans-BoldItalic.ttf") format("truetype"); }

seedlet/assets/sass/fonts.scss

@@ -41,6 +41,14 @@
         font-family: 'Fira Sans';
         font-display: swap;
         font-style: italic;
-        font-weight: 100 900;
+        font-weight: 100 400;
         src: url( '../fonts/Fira_Sans/FiraSans-Italic.ttf') format('truetype');
+    }
+
+    @font-face {
+        font-family: 'Fira Sans';
+        font-display: swap;
+        font-style: italic;
+        font-weight: 500 900;
+        src: url( '../fonts/Fira_Sans/FiraSans-BoldItalic.ttf') format('truetype');
     }