individual letter spin duvet ju mp

.spinny mark {
    background: none;
    font-size: 4em;

}

.spinny:hover mark {
    animation: spin 1s infinite;
    animation-timing-function: cubic-bezier(0.25, 0.85, 0.4, 1);
}

.spinny mark:nth-child(1) {
    animation-delay: 0.1s;
    display: inline-block;
}

.spinny mark:nth-child(2) {
    animation-delay: 0.2s;
    display: inline-block;
}

.spinny mark:nth-child(3) {
    animation-delay: 0.3s;
    display: inline-block;
}

.spinny mark:nth-child(4) {
    animation-delay: 0.4s;
    display: inline-block;
}

.spinny mark:nth-child(5) {
    animation-delay: 0.5s;
    display: inline-block;
}

.spinny mark:nth-child(6) {
    animation-delay: 0.6s;
    display: inline-block;
}

.spinny mark:nth-child(7) {
    animation-delay: 0.7s;
    display: inline-block;
}

.spinny mark:nth-child(8) {
    animation-delay: 0.8s;
    display: inline-block;
}

.spinny mark:nth-child(9) {
    animation-delay: 0.9s;
    display: inline-block;
}

.spinny mark:nth-child(10) {
    animation-delay: 1s;
    display: inline-block;
}

@keyframes spin {
    100% {
        transform: rotateY(360deg);
    }
}