diff --git a/includes/MasonryWidget.php b/includes/MasonryWidget.php
index 545ba4a..76a9f8c 100644
--- a/includes/MasonryWidget.php
+++ b/includes/MasonryWidget.php
@@ -43,7 +43,7 @@ CSS;
             $colWidth = round(100 / $maxCol, 6);
 
             $css .= <<<CSS
-@media (min-width: {$width}px) { .isekai-masonry.max-col-{$breakpoint}-${maxCol} { --masonry-col-width: {$colWidth}%; } }
+@media (max-width: {$width}px) { .isekai-masonry.max-col-{$breakpoint}-${maxCol} { --masonry-col-width: {$colWidth}%; } }
 CSS;
         }