Summary: Tech21 offers 25% off sitewide.

Why It Matters: This is a big sale that could get more people to buy their products.

What Changed:

• A banner offering "HOLIDAY SALE! 25% OFF SITEWIDE" was added.
• The old banner about saving 20% on a screen protector was removed.
• A new main banner was added that says "Ending the Season with 25% OFF EVERYTHING!"
• The number of main banners changed from 3 to 4.
• Some search terms were added at the end of the content.