ref: move box-sizing css to avoid layout shift on load

Author: panstromek

webzebra/src/critical.css

@@ -1,3 +1,7 @@
+* {
+  box-sizing: border-box;
+}
+
 body {
   background-color: #3a7f46;
   font-family: Avenir, Helvetica, Arial, sans-serif;

webzebra/src/index.css

@@ -3,7 +3,6 @@
  Copyright (c) Tailwind Labs, Inc.
 */
 *, :before, :after {
-    box-sizing: border-box;
     border-width: 0;
     border-style: solid;
     border-color: #e5e7eb