.my-hover-btn .hover-icon {
    transform: translateX(0);
}

.my-hover-btn:hover .hover-icon {
   animation: arrowAnimate 1s infinite;
}

@keyframes arrowAnimate {
    0% {
        transform: translateX(0);
    }

    50% {
        transform: translateX(10px);
    }

    100% {
        transform: translateX(0);
    }
}