Add a border color and shadow to the input text box for better visibility

[dvnahuel]

The input text box for typing a message to sign currently blends into the background, making it difficult to identify. Adding a border color will help improve visibility and user experience.

As a user, I want the input text box to have a clear background color, So that I can easily locate it and identify where to type my message.

1. The input text box has a border color border: 1px solid var(--color-grayscale-neutral-30056, rgba(212, 212, 216, 0.56));
2. A subtle box shadow is applied to give the FAQ items depth box-shadow: 0px 1px 2px 0px rgba(10, 10, 10, 0.04);

Figma: Link

Current implementation:

Proposal: