diff --git a/public/css/mixin/progress-bar.less b/public/css/mixin/progress-bar.less
index 74bb83b9..d15b4c36 100644
--- a/public/css/mixin/progress-bar.less
+++ b/public/css/mixin/progress-bar.less
@@ -162,7 +162,7 @@
         left: var(--hPadding);
         width: var(--duration-scale);
 
-        &::before {
+        &[data-animate-progress]::before {
           content: "";
           display: block;
           width: .5em + @marker-gap;