fix horizontal scrollbar

Author: michelemazzucco

components/Hero/Hero.module.css

@@ -1,5 +1,4 @@
 .hero {
-  width: 100vw;
   height: 100vh;
   position: relative;
 }

css/global.css

@@ -7,6 +7,10 @@ body {
   -moz-osx-font-smoothing: grayscale;
 }
 
+* {
+  box-sizing: border-box;
+}
+
 .container {
   max-width: 42em;
   margin: 200px auto 3rem auto;