#container
{
    height:400px;
    width:400px;
    margin:auto;
    border:2px solid black;
    /* background-image:linear-gradient(45deg, red 0%,cyan 70%, blue 100%); */
    /* background:radial-gradient(red -70%, blue 153%); */
    /* background:repeating-radial-gradient(red 29%, green 33%); */
    background:repeating-linear-gradient(379deg, red 32%, blue 38%);
}