diff --git a/less/topic.less b/less/topic.less
index c50bf13..e84f86b 100644
--- a/less/topic.less
+++ b/less/topic.less
@@ -307,7 +307,7 @@
 		.content {
 			margin-left: 0;
 			margin-top: -10px;
-			
+
 			.table {
 				overflow-x: auto;
 				display: block;
@@ -336,7 +336,7 @@
 			margin-left: 1px;
 		}
 	}
-	
+
 	.quick-reply {
 		.icon {
 			position: relative;
@@ -362,21 +362,21 @@
 				.user-icon-style(46px, 2.4rem, 50%);
 			}
 		}
-		
+
 		.quickreply-message {
 			margin-left: 61px;
 			margin-bottom: 5px;
-			
+
 			@media (max-width: @screen-sm-max) {
 				margin-left: 0;
-				
+
 				[component="topic/quickreply/text"] {
 					font-size: 16px;
 					padding: 10px;
 				}
 			}
 		}
-		
+
 		[component="topic/quickreply/button"] {
 			margin-bottom: 10px;
 		}
@@ -503,6 +503,7 @@
 			display:block;
 			z-index: -1;
 			position: absolute;
+			transition: width 50ms ease-in;
 		}
 	}
 }