[STYLE CHANGE] Better UI and style change for Bhagwad Gita Quiz button

**Description:**

The constantly glitching button for Bhagwad Gita Quiz is not visually pleasing. Also Better Color for the button would look more attractive. I feel the current button styling doesn't go with the overall aesthetic of the page.

**Reason for Change:**

Smoother UX and UI for the user.

**Current Styling:**

1. The gliching button of Start Bhagwad Gita Quiz should be changed.
2. Current color of button must be changed in accordance to the overall theme..]

**Proposed Styling:**

1. Smoother hover effect for the "Start Bhagwad Gita Quiz button"
2. Pleasing color for the button.

**Screenshots or Design Mockups (optional):**

https://github.com/akshitagupta15june/Moksh/assets/97681609/fb1398cd-81c6-410e-8d14-7f40025f4bf6

**Additional Information (optional):**

Please assign me this issue and accept it under GSSOC'24.

**Priority Level (optional):**
- [x] High

**Timeline (optional):**

3 days

**Possible Implementation Approach (optional):**

[If you have any suggestions or ideas on how the style change could be implemented, feel free to provide them here.]