susee

.css-selector {
    background: linear-gradient(43deg, #055783, #116e7c, #055783, #19699d);
    background-size: 800% 800%;
    -webkit-animation: see-meets-sun 26s ease infinite;
    -moz-animation: see-meets-sun 26s ease infinite;
    -o-animation: see-meets-sun 26s ease infinite;
    animation: see-meets-sun 26s ease infinite;
}
@-webkit-keyframes see-meets-sun {
    0%{background-position:53% 0%}