Fix table centering and margin

sass/style.scss

@@ -145,9 +145,8 @@ main {
 
 	table {
 		max-width: 100%;
-		margin: 0 auto;
+		margin: 1.5em auto;
 		text-align: left;
-		display: block;
 		overflow: auto;
 
 		td, th { padding: 0 1em }