diff --git a/src/mailgo.scss b/src/mailgo.scss
index 440d3a0..c1c20f9 100644
--- a/src/mailgo.scss
+++ b/src/mailgo.scss
@@ -62,6 +62,7 @@ $skype-color: #00aff0;
     display: block;
     overflow: auto;
     padding: 20px;
+    transition: 0.5s box-shadow;
 
     &:hover {
       opacity: 1;