@keyframes lookLeftRight {
    0% {
        transform: rotate(0deg);
    }

    25% {
        transform: rotate(-15deg);
    }

    50% {
        transform: rotate(0deg);
    }

    75% {
        transform: rotate(15deg);
    }

    100% {
        transform: rotate(0deg);
    }
}

.looking-animation {
    animation: lookLeftRight 1.6s ease-in-out infinite;
}