use sibling selector to add margin around table; reduce margin to 1.5rem

Author: mojavelinux

src/css/doc.css

@@ -190,7 +190,7 @@
 .doc table.tableblock {
   border-collapse: collapse;
   font-size: calc(15 / var(--rem-base) * 1rem);
-  margin: 2rem 0;
+  margin: 1.5rem 0 0;
   /* enable table-layout: fixed if you want the table width to be enforced strictly */
   /* alternative is to wrap table in div and set overflow-x: auto on the wrapper */
   /* another alternative is to set overflow-x: auto and display: block on table (but this breaks table borders) */
@@ -203,6 +203,10 @@
   */
 }
 
+.doc table.tableblock + * {
+  margin-top: 1.5rem;
+}
+
 .doc td.tableblock > .content > :first-child {
   margin-top: 0;
 }