Background image gradient is not soft enough

[BSoDium]

The background image of the landing page appears to have a steep gradient, leading to poor rendering on LCD monitors, especially wide ones. This needs to be solved either by editing the image in photoshop or by adding CSS filters to soften it

1. Right end of the background (tiling might be a solution)
   
2. Bottom end (only visible on non-OLED or non-MicroLED displays)
   

[BSoDium]

Fixed in #21