Implement visual enhancements

[luboskmetko]

Here are a few visual enhancements suggested by Stano:

• green blobs behind the illustration could be animated somehow like https://codepen.io/cassie-codes/pen/zWJxXj or https://codepen.io/team/Atcom/pen/oWJjYZ
• in the 3rd illustration with terminal, the cursor could blink and then create chisel could be typed automatically