Fix/Add 404 page + update error component styles

[JaneMoroz]

Description

• updated the error component's styles to match the design in Error Message in Figma

Issue link

Fixes #205

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• 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
• Any dependent changes have been merged and published in downstream modules

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Name	Status	Preview	Comments	Updated (UTC)
chingu-dashboard	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 2, 2024 10:39am