Bend CSS and HTML to my will

[hienpd]

• [x] Nav bar logo
• [x] Home page welcome image
• [x] Site theme colors
• [x] Fix positioning of divs, forms, etc.
• [x] Fix login fields
• [x] Apply color palette to family tree

[hienpd]

Color palette: https://coolors.co/00a5be-eac435-345995-fb4d3d-ca1551