Gradient animation — Random position

I have this css code that animates the background colour of my page. I would like to alter it so that the position of the gradient is randomised every time I reload the page. How can I accomplish that?

.section-background {
    background: linear-gradient(270deg, #8A90F9, #91F2F2, #92F492, #FFB64D, #FF5C5C, #FC92FC);
    background-size: 10000% 10000%;

    -webkit-animation: AnimationName 60s ease infinite;
    -moz-animation: AnimationName 60s ease infinite;
    animation: AnimationName 60s ease infinite;
}

@-webkit-keyframes AnimationName {
    0%{background-position:0% 50%}
    50%{background-position:100% 50%}
    100%{background-position:0% 50%}
}
@-moz-keyframes AnimationName {
    0%{background-position:0% 50%}
    50%{background-position:100% 50%}
    100%{background-position:0% 50%}
}
@keyframes AnimationName { 
    0%{background-position:0% 50%}
    50%{background-position:100% 50%}
    100%{background-position:0% 50%}
}

  }