Reduce padding around logo on landing page (#10291)

app/javascript/styles/mastodon/about.scss

@@ -657,7 +657,7 @@ $small-breakpoint: 960px;
     display: flex;
     justify-content: center;
     align-items: center;
-    padding: 100px;
+    padding: 50px;
 
     img {
       height: 52px;