diff --git a/tests/Slider.test.svelte b/tests/Slider.test.svelte
index c5f5b000..90136f8b 100644
--- a/tests/Slider.test.svelte
+++ b/tests/Slider.test.svelte
@@ -10,6 +10,7 @@
   max="{990}"
   maxLabel="990 MB"
   value="{100}"
+  fullWidth
 />
 
 <Slider