Changes made:

1. Items now drop with center alignment within their columns:

   • Modified the .item CSS to include width: 100px; and text-align: center;.
   • Updated the columns array in JavaScript to [0, 100, 200] to align with the new column widths.

2. Added two light gray vertical line borders between the three vertical drop columns:

   • Added new CSS for .column-border to create vertical lines.
   • Inserted two <div> elements with the column-border class in the HTML.

3. Improved the player controller / catcher symbol:

   • Modified the #player CSS to change it from a circle to a rectangular shape with rounded top corners.
   • Updated dimensions to width: 60px; height: 20px;.
   • Changed the border-radius to 10px 10px 0 0 to round only the top corners.
   • Adjusted the initial left position to 120px to align with the new column layout.

These changes should improve the visual appeal and functionality of the game while maintaining its core mechanics.