CSS Mesh Gradient Generator
Tune color points and copy the CSS background.
background: radial-gradient(circle at 20% 25%, #ffd35c, transparent 32%), radial-gradient(circle at 80% 20%, #ff9b3f, transparent 30%), radial-gradient(circle at 25% 85%, #7c3aed, transparent 34%), radial-gradient(circle at 82% 78%, #06b6d4, transparent 32%), #050505;