feat: redesign

[SGiaccobasso]

# Description

ITS site rebranding following [this design](https://www.figma.com/design/pTSMXVsemtVoLMVDKc1A29/ITS-PORTAL-REBRAND?node-id=0-1&t=PoM66hKvz1QN8dgW-0)

## ⛑️ **What was done:**

Redesign of the site. Colors and fonts, background image and animation, fix mobile home view.

## Type of change

Please delete options that are not relevant.

- [ ] New feature (non-breaking change which adds functionality)
- [ ] Ready to merge

### 🧪 **How to test:**

These changes are mostly aesthetic but they affect the whole app.

### 🗒️ **Notes:**

- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my feature works
- [ ] New and existing unit tests pass locally with my changes

### 🖼️ **Screenshots:**

#### Desktop:

## Dark

<img width="1430" alt="image" src="https://github.com/axelarnetwork/axelarjs/assets/44235486/6a5817a5-3427-408f-9cbb-10edd05bec16">

<img width="1440" alt="image" src="https://github.com/axelarnetwork/axelarjs/assets/44235486/2cfa0c89-c327-4d65-9688-f50fc63b47b9">

## Light
<img width="1436" alt="image" src="https://github.com/axelarnetwork/axelarjs/assets/44235486/22610784-6c5f-4177-9c9b-bdf29d9cd3e4">
<img width="1440" alt="image" src="https://github.com/axelarnetwork/axelarjs/assets/44235486/e936ea32-4ed4-4de9-a10d-b7ba33bc6a50">

#### Mobile:

## Light
<img width="989" alt="image" src="https://github.com/axelarnetwork/axelarjs/assets/44235486/7d4de47f-1d58-4219-a42c-5f85c018298d">

## Dark
<img width="1162" alt="image" src="https://github.com/axelarnetwork/axelarjs/assets/44235486/6826a08d-248b-40d6-8282-66b8a0cef90e">

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Latest commit: 4ac2adf22700707127ff8c79e6ad92c7d8cb5862

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