background: linear-gradient(orange, blue);

background: linear-gradient(to right, orange, blue);

background: linear-gradient(to top right, orange, blue);

background: linear-gradient(-45deg, orange, blue);

background: linear-gradient(to right, orange, blue, red, yellow, green);

background: linear-gradient(to right, orange 0 20%, blue 20% 40%, red 40% 60%, yellow 60% 80%, green 80% 100%);

background: linear-gradient(to right, orange 0 18%, blue 20% 38%, red 40% 58%, yellow 60% 78%, green 80% 98%);

background: linear-gradient(to right, white 50%, black);

background-image: linear-gradient(to right, transparent, rgba(0,255,0,0.5)), url(image.jpg);

background-image: radial-gradient(lime, blue);

background-image: radial-gradient(at left, lime, blue);

background-image: conic-gradient(lime, blue);

background-image: conic-gradient(at 0% 60%, lime, blue);

background-image: conic-gradient(from 225deg, lime, blue);

background-image: repeating-linear-gradient(45deg, lime 0 5%, blue 5% 10%);

background-image: repeating-linear-gradient(45deg, transparent 0 10%, #ddd 10% 20%);

background-image: repeating-radial-gradient(white 0 5%, blue 5% 10%);

background-image: repeating-conic-gradient(lime 0deg 15deg, blue 15deg 30deg);