body {
  margin:0;
}
.wrapper {
    width: 100%;
    height: 100%;
    position: absolute;
    background: linear-gradient(45deg,#F17C58, #E94584, #24AADB , #27DBB1,#FFDC18, #FF3706);
    background-size: 600% 100%;
    animation: gradient 10s linear infinite;
    animation-direction: alternate;
}
@keyframes gradient {
    0% {background-position: 0%}
    100% {background-position: 100%}
}