make every first paragraph on markdown pages a lead paragraph

_src/_assets/styles/bigchain/_content-page.scss

@@ -12,6 +12,11 @@
         padding-bottom: ($spacer * 4);
     }
 
+    p:first-child {
+        @extend .lead;
+        margin-bottom: ($spacer * 2);
+    }
+
     > h1, h2 {
         border-bottom: 1px solid $brand-main-blue-light;
         padding-bottom: $spacer;

_src/_assets/styles/bigchain/_typography.scss

@@ -155,6 +155,7 @@ strong,
 .lead {
     font-size: $font-size-lg;
     color: $headings-color;
+    line-height: $line-height-lg;
 }
 
 //

_src/cla/index.md

@@ -10,7 +10,8 @@ Before we can accept any contributions from you or the organization you represen
 
 You will retain full ownership of your work, including the ability to license it to others.
 
-[Individual Contributor Agreement](individual/) | [Entity Contributor Agreement](entity/)
+- [Individual Contributor Agreement](individual/)
+- [Entity Contributor Agreement](entity/)
 
 ## Sign the agreement