Improve horizontal alignment of upgrade icons

gorge.css

@@ -299,13 +299,14 @@ button {
   display: block;
   background-color: #444;
   transition: 0.2s;
+  text-align: center;
 }
 
 .upgrade-button > .fas {
   width: 100px;
   height: 100px;
   font-size: 75px;
-  transform: translate(12.5%, -37.5%);
+  transform: translate(0%, -37.5%);
   opacity: 0.5;
 }