Make landing section of the site mobile friendly

[chekkan]

What was the feature/problem?

fixes #99 - Primary way the kids are going to interact with this site is via a tablet

How does this PR address the above feature/problem?

Additional fixes

• Removed the sliding "hello, hola..." animation as it was distracting and helped with the text overlap issue on mobile screen.
• Have made the login, registration, and wish list landing pages mobile-friendly.
• Fixed few accessibility issues and HTML5 semantic issues (hover pointer on wish type and the section on landing header)
• Removed the use of the CSS grid as it is not fully supported in all browsers.

Check lists

• [x] Test passed
• [x] Coding style (indentation, etc)