.bgtest {
    background: linear-gradient(45deg, #f22613, #f89406, #26a65b, #5868ec, #f54e80, #f7ca18, #d2527f);
    background-size: 500% 500%;
    -webkit-animation: ignielGradient 12s ease infinite;
    -moz-animation: ignielGradient 12s ease infinite;
    animation: ignielGradient 12s ease infinite;
}
@-webkit-keyframes ignielGradient {
    0%{background-position: 0% 50%}
    50%{background-position: 100% 50%}
    100%{background-position: 0% 50%}
}
@-moz-keyframes ignielGradient {
    0%{background-position: 0% 50%}
    50%{background-position: 100% 50%}
    100%{background-position: 0% 50%}
}
@keyframes ignielGradient {
    0%{background-position: 0% 50%}
    50%{background-position: 100% 50%}
    100%{background-position: 0% 50%}
}

body{
    vertical-align: middle;
    text-align: center;
    font-family: Arial;
    font-size: 26pt;
}