CSS Improvements for Vocabulary Front Page

[joelit]

Description of the enhancement

• [ ] The footer should be white and it should line up with the main content
• [x] The search bar should be followed by a wide margin
• [ ] The search tips are missing
• [x] The search bar background should be white
• [ ] The Footer text should line up with the text of the main content
• [x] The page margins should be smaller
• [ ] The search bar margins should line up with the main content
• [x] The Skosmos logo should be larger
• [ ] The UI elements should line up in the bottom of the layout
• [ ] The vocab statistic components should follow the visual spec
• [x] The space between the columns should be wider