How to make the same illumination?

Question

css

Hello everyone, how to make the same highlight? (If you look at the right side of the screen, then on the left there will be a solid color, and on the right it is blurry with highlights). It doesn't come with a picture. Maybe someone will tell? I will be grateful for any info.

Answer 1

Well, the other day I had to do something similar. Solved by radial gradients. Designer SVGs were too heavy.
https://jsfiddle.net/fbL2uxdj/

Answer 2

CSS gradient -> https://cssgradient.io/
Do what you need and copy the code below