/*アニメーションの@keyframes用のCSSコードを書く（ここに書くとAMP用で約500KBまで記入できます）*/
@-webkit-keyframes bggradient {
    0% {
        background-position: 0% 50%;
    }

    25% {
        background-position: 50% 100%;
    }

    50% {
        background-position: 100% 50%;
    }

    75% {
        background-position: 50% 25%;
    }

    100% {
        background-position: 0% 50%;
    }
}
@keyframes bggradient {
    0% {
        background-position: 0% 50%;
    }

    25% {
        background-position: 50% 100%;
    }

    50% {
        background-position: 100% 50%;
    }

    75% {
        background-position: 50% 25%;
    }

    100% {
        background-position: 0% 50%;
    }
}