Fix bold styles (#52)

* add upshifted heading styles

* remove sora on h2, add margin on data lists

* revert heading upshift

Author: colegoldsmith

src/css/doc.css

@@ -265,6 +265,12 @@
   text-decoration: line-through;
 }
 
+.doc strong,
+.doc b {
+  font-weight: var(--body-font-weight-bold);
+  color: var(--ds-text-primary);
+}
+
 .doc .paragraph,
 .doc .dlist,
 .doc .hdlist,
@@ -889,6 +895,10 @@
   vertical-align: top;
 }
 
+.doc dd + dt.hdlist1 {
+  margin-top: calc(24 / var(--rem-base) * 1rem);
+}
+
 .doc tr:first-child > .hdlist1,
 .doc tr:first-child > .hdlist2 {
   padding-top: 0;

src/css/highlight.css

@@ -111,7 +111,7 @@
 }
 
 .hljs-strong {
-  font-weight: bold;
+  font-weight: 500;
 }
 
 .hljs {