Check for empty header differently

Closes #3409899

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• a00acfea - Switch to CSS solution

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• 68ca5dfc - 1 commit from branch project:8.x-3.x
• 8a18da07 - Check for empty header differently
• e72f8111 - Switch to CSS solution

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added 1 commit

• 82f8a07f - Small visual change

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