Summary: Added SUMMER DEALS promotion.

Why It Matters: This shows a new sales event. It offers big discounts.

What Changed:

• Removed "30 Tage kostenlose Retoure" text from the top section.
• Added a "SUMMER DEALS" banner with up to 70% off plus an extra 10% with code SUMMER10.
• Added a new link for "Wackelkontakt - Oimara" under "Konzepte".
• Removed the last part of the "Newsletter" text.
• Removed the last part of the "Datenblatt zu Leuchtmitteln" text.
• Added new legal text at the very bottom about prices and shipping.