diff --git a/src/less/animation.less b/src/less/animation.less
deleted file mode 100644
index cea8874f9..000000000
--- a/src/less/animation.less
+++ /dev/null
@@ -1,41 +0,0 @@
-.keyframes(@name, @frames) {
-    @-webkit-keyframes @name {
-        @frames();
-    }
-    @-moz-keyframes @name {
-        @frames();
-    }
-    @-ms-keyframes @name {
-        @frames();
-    }
-    @-o-keyframes @name {
-        @frames();
-    }
-    @keyframes @name {
-        @frames();
-    }
-}
-
-.animation(@attr) {
-    -webkit-animation: @attr;
-    -moz-animation: @attr;
-    -ms-animation: @attr;
-    -o-animation: @attr;
-    animation: @attr;
-}
-
-.animation-delay(@attr) {
-    -webkit-animation-delay: @attr;
-    -moz-animation-delay: @attr;
-    -ms-animation-delay: @attr;
-    -o-animation-delay: @attr;
-    animation-delay: @attr;
-}
-
-.transform(@attr) {
-    -webkit-transform: @attr;
-    -moz-transform: @attr;
-    -o-transform: @attr;
-    -ms-transform: @attr;
-    transform: @attr;
-}
\ No newline at end of file
diff --git a/src/less/visual.less b/src/less/visual.less
index 54c0a4dd2..f7290cb70 100644
--- a/src/less/visual.less
+++ b/src/less/visual.less
@@ -254,4 +254,47 @@
     content: "";
     transform: rotate(-45deg);
   }
+}
+
+// css3 animation
+.keyframes(@name, @frames) {
+  @-webkit-keyframes @name {
+      @frames();
+  }
+  @-moz-keyframes @name {
+      @frames();
+  }
+  @-ms-keyframes @name {
+      @frames();
+  }
+  @-o-keyframes @name {
+      @frames();
+  }
+  @keyframes @name {
+      @frames();
+  }
+}
+
+.animation(@attr) {
+  -webkit-animation: @attr;
+  -moz-animation: @attr;
+  -ms-animation: @attr;
+  -o-animation: @attr;
+  animation: @attr;
+}
+
+.animation-delay(@attr) {
+  -webkit-animation-delay: @attr;
+  -moz-animation-delay: @attr;
+  -ms-animation-delay: @attr;
+  -o-animation-delay: @attr;
+  animation-delay: @attr;
+}
+
+.transform(@attr) {
+  -webkit-transform: @attr;
+  -moz-transform: @attr;
+  -o-transform: @attr;
+  -ms-transform: @attr;
+  transform: @attr;
 }
\ No newline at end of file