body{
    min-width: 100%;
    min-height: 100%;
    background: linear-gradient(230deg, #a24bcf, #4b79cf, #4bc5cf);
    background-size: 300% 300%;
    -webkit-animation: MoveBG 60s ease infinite;
    -moz-animation: MoveBG 60s ease infinite;
    -o-animation: MoveBG 60s ease infinite;
    animation: MoveBG 60s ease infinite;
}
@-webkit-keyframes MoveBG {
    0%{background-position:0% 50%}
    50%{background-position:100% 50%}
    100%{background-position:0% 50%}
}
@-moz-keyframes MoveBG {
    0%{background-position:0% 50%}
    50%{background-position:100% 50%}
    100%{background-position:0% 50%}
}
@keyframes MoveBG {
    0%{background-position:0% 50%}
    50%{background-position:100% 50%}
    100%{background-position:0% 50%}
}