diff --git a/src/common/SignupBox.scss b/src/common/SignupBox.scss
index 9c28ca9..7136e8f 100644
--- a/src/common/SignupBox.scss
+++ b/src/common/SignupBox.scss
@@ -111,9 +111,10 @@
 
     img {
       height: 16px;
+      width: auto;
       vertical-align: baseline;
-	  margin: 6px auto;
-	  display: block;
+      margin: 6px auto;
+      display: block;
     }
 
     a {