Organize css

Add icons for why section figures
Fix indentation in main.css
Merge pull request #57 from mkiedys/work2

Organize css
Fix different carousel slide size effect
Merge pull request #58 from koduj/alpha-carousel-slide-layout

Fix different carousel slide size effect
Add title, description, keywords and robots
Merge pull request #59 from mkiedys/meta

Add title, description, keywords and robots