How to create these background lines

[Summayah5FC7]

How would i create these background lines. 

[Doug A Roberts · Accepted solution]

Blend two objects like this with radial gradient fills, then clip with a rounded rectangle:

[Summayah5FC7]

Thanks. How would i do this effect in between lines that look like these.

[Monika Gause]

You could try an inner glow effect (with a blendmode of Normal) instead of the gradient.

[Ton Frederiks · Accepted solution]

Gradient across a stroke?