update text presentation template

src/pages/Introduction.vue

@@ -80,10 +80,17 @@ export default {
 
   .page-intro {
     font-family: $font-family-text;
-    font-size: 2rem;
+    font-size: 1.5rem;
 
     @include media-breakpoint-up($size-bp) {
-      font-size: 3rem;
+      font-size: 2rem;
+    }
+
+    @include media-breakpoint-up($layout-bp) {
+      ::v-deep .page-wrapper {
+        max-width: 70%;
+        margin: auto;
+      }
     }
   }
 }