email.html

<style>
    @-webkit-keyframes test_animation
    {
        from {
            -webkit-transform:rotateZ(0deg);
        }
        to {
            -webkit-transform:rotateZ(180deg);
        }
    }
    .test {
        -webkit-animation-name: test_animation;
        -webkit-animation-iteration-count: infinite;
        -webkit-animation-timing-function: linear;
        -webkit-animation-duration: 1.5s;
        background-color: #00ff00;
    }
</style>