Mesh Gradient

background-color: #1a1a2e;
background-image:
    radial-gradient(at 93% 97%, #ff6b6b 0px, transparent 55%),
    radial-gradient(at 78% 78%, #feca57 0px, transparent 55%),
    radial-gradient(at 49% 57%, #48dbfb 0px, transparent 55%),
    radial-gradient(at 12% 97%, #1dd1a1 0px, transparent 55%);