Revert "font-size: initial; (#1381)" (#1395)

This reverts commit 06b16ee.

Author: barryvdh

src/Resources/laravel-debugbar.css

@@ -13,7 +13,6 @@ div.phpdebugbar {
 
 div.phpdebugbar * {
     direction: ltr;
-    font-size: initial;
     text-align: left;
 }