I'll create a React component that displays three strings with different text shimmer animations as you've described. We'll use CSS animations to create the shimmer effect for each text.

This implementation creates three different text shimmer animations as requested:

1. Black text with a light shimmer: The first heading uses the shimmer-light class, which applies a light shimmer effect on black text.
2. Gray text with a dark shimmer: The second heading uses the shimmer-dark class, which applies a dark shimmer effect on gray text.
3. Gray text with a light shimmer: The third heading uses the shimmer-light-gray class, which applies a light shimmer effect on gray text.

The text elements are stacked vertically with 40px space between them (achieved using the Tailwind CSS mb-10 class, which adds a 40px bottom margin).

You can adjust the animation speed, colors, or other properties in the CSS file to fine-tune the shimmer effects as needed.

I'll modify the code to create the horizontal linear gradient animation that travels across the text, with a 4-second delay between each animation cycle. I'll also make the background white and use a dimmer shade of gray for the text.

These changes address the issues and implement the requested modifications:

1. The shimmer animation now correctly travels horizontally across the text.
2. There's a 4-second delay between each animation cycle (using animation-delay: 4s;).
3. The background of the page is now white (bg-white class in the main div).
4. The shade of gray for the text is dimmer (using text-gray-400 instead of text-gray-700).

Here's a breakdown of the changes:

1. In the main component (text-shimmer.tsx):

   • Changed the background to white.
   • Updated the gray text color to a dimmer shade.

2. In the CSS file (text-shimmer.css):

   • Created a single @keyframes shimmer rule for all animations.
   • Updated each shimmer class to use a linear gradient that moves across the text.
   • Set background-size: 200% 100% to ensure the gradient is twice the width of the text.
   • Used color: transparent and background-clip: text to make the gradient visible on the text.
   • Set the animation to run for 2 seconds (animation: shimmer 2s infinite).
   • Added a 4-second delay between animations (animation-delay: 4s).

These changes should create the desired shimmer effect with a horizontal gradient moving across each text element, a 4-second delay between animations, and the requested color adjustments.