Centered tables in post styling

Author: alandefreitas

_sass/pages/post.scss

@@ -383,13 +383,13 @@
   }
 
   table {
-    display: block;
-    width: 100%;
+    display: table;
+    max-width: 100%;
     overflow: auto;
     vertical-align: middle;
     box-sizing: border-box;
     border-collapse: collapse;
-    margin: .8rem 0;
+    margin: .8rem auto;
     th {
       font-weight: 600;
       text-align: center;