Responsive, beautiful email sign-up process pages

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This customer received 173 web designs from 7 designers. They chose this web design from pb as the winning design.
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Web Design Brief
My client wants to re-imagine their email newsletter sign up process. The funnel currently starts in the first panel of their home page carousel at:
https://savingschampion.co.uk/
It is also featured in the right side of the footer.
I would like to start, what could become a full template re-design project by optimising this crucial user journey. I am attaching the screenshots from the current user journey below and it would be great to get some designs that improve on the look and feel.
Thank you,
Warren
Target Market(s)
People who want to maximise the interest rate they receive on their cash savings.
Industry/Entity Type
Financial Service
Coding
Coded - Design and coding required
Number of Pages Required
4 page
Font styles to use
Look and feel
Each slider illustrates characteristics of the customer's brand and the style your logo design should communicate.
Elegant
Bold
Playful
Serious
Traditional
Modern
Personable
Professional
Feminine
Masculine
Colorful
Conservative
Economical
Upmarket
Requirements
Must have
- A well designed, responsive design for all of the elements of the user journey funnel that works well on desktop, laptop, tablet and phone. The site is currently using Bootstrap 3.* for the responsive templates, so it would be useful to continue leveraging these libraries, but in a much more visually appealing way.
- It is felt that the current overall site is dull and unprofessional, so we are using this as a way of showing how much better it could be, which should lead to a sitewide "facelift".
Nice to have
- Creative use of css, svg and javascript to optimise the user experience on all target platforms.
Should not have
- Non-responsive designs.