Moves shades of blue across an element of choice

animatedGradient.css

background: linear-gradient(307deg, #153cdb, #006aff, #06348a);
background-size: 600% 600%;

-webkit-animation: blueTide 17s ease infinite;
-moz-animation: blueTide 17s ease infinite;
-o-animation: blueTide 17s ease infinite;
animation: blueTide 17s ease infinite;

@-webkit-keyframes blueTide {
    0%{background-position:0% 51%}
    50%{background-position:100% 50%}
    100%{background-position:0% 51%}
}
@-moz-keyframes blueTide {
    0%{background-position:0% 51%}
    50%{background-position:100% 50%}
    100%{background-position:0% 51%}
}
@-o-keyframes blueTide {
    0%{background-position:0% 51%}
    50%{background-position:100% 50%}
    100%{background-position:0% 51%}
}
@keyframes blueTide {
    0%{background-position:0% 51%}
    50%{background-position:100% 50%}
    100%{background-position:0% 51%}
}