Add Tagline to Footer Brand Section

[akshay0611]

Issue Description:

• What: Add a tagline to the footer's brand section to enhance branding and provide context or value proposition for "Cryptex".

Why:

• Improves the visual appeal of the footer.
• Helps in reinforcing the site's purpose or unique selling proposition.
• Enhances user engagement by immediately conveying what Cryptex stands for.

Implementation Details:

• Add a element with the class tagline immediately after the logo text, containing the text: "Your Gateway to Crypto".
• Ensure the tagline is styled appropriately to fit well with existing design elements.