Adjust Styling for NavBar

[najwanan]

• [x] Donate button padding should be reduced. Font size should be 18 and padding as image
• [x] Padding on the nav bar should be thinner at the top/bottom
• [x] Nav bar should just have "SPEC" on smaller screens. Tablet size should change to SPEC as well, font gets too small to read,
• [x] Change background on the menu should be at 100%, no transparency
• [x] SPEC logo blurry - check if it's in svg format.

[najwanan]

SPEC logo is currently in svg format.