Use compact style for table.

Author: BigBlueHat

playground/next/index.html

@@ -300,7 +300,8 @@ <h2 class="ui massive header">JSON-LD Playground</h2>
     <div class="ui very compact divided grid">
       <div class="column" :class="{'eight wide': outputTab == 'cborld'}">
         <div v-show="outputTab != 'table'" id="read-only-editor"><!-- replaced by CodeMirror --></div>
-        <table class="ui very padded table" v-show="outputTab == 'table'">
+        <table class="ui compact table" style="margin-top: 0"
+          v-show="outputTab == 'table'">
           <thead>
             <tr>
               <th>Subject</th>