UI Enhancement - Fixed the alignment of content in hero section.

[NilanchalaPanda]

What does this PR do?

This PR fixes the following things in the hero section of SmartGrid - EVNotify website :

• Center aligned the content in mobile version.
• Fixed the opacity of gif loader in dark mode and light mode.
• Changes in color of sub-heading text in the hero section for better visibility.
• Added next/Image tag for gif loader to get get better optimization results.

Current alignment of the content can be seen by navigating to the home page of EVNotify. - https://smart-ethindia.vercel.app/ Fixes #26

How this should be tested?

• [ ] Go to Homepage.
• [ ] Check in mobile version for the alignment of content.

Result of PR -

[vercel[bot]]

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Name	Status	Preview	Comments	Updated (UTC)
smart-grid	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 10, 2024 6:26am

[Mayank2808sharma]

LGTM