Changed margin for site logo in the footer to 4em so it scales better on mobiles.

Author: Tomasz-Kluczkowski

_sass/style.scss

@@ -729,7 +729,7 @@ a {
   text-align: center;
   font-size: 1.2em;
   color: $footer-text;
-  margin-top: 130px;
+  margin-top: 4em;
 }
 
 .footer__text-credits {