Poor CLS (Cumulative Layout Shift) Test Page

This page dynamically inserts content without reserved space to trigger the poor_cls issue.

CLS measures visual stability. Good CLS is 0.1 or less. Layout shifts occur when visible elements change position unexpectedly.

What's wrong?

• Content inserted dynamically without reserved space
• No height/width attributes on dynamic elements
• Content appears above existing content, pushing it down
• CLS score likely exceeds 0.1 threshold

CLS Thresholds:

• Good: ≤ 0.1
• Needs Improvement: 0.1-0.25
• Poor: > 0.25