<div class="olho"></div>
<style>
    .olho {
        background: #ed5050;
        border-radius: 50%;
        margin: 6px 10px 10px;
        height: 10px;
        width: 10px;

        box-shadow: 0 0 0 0 rgba(0, 0, 0, 1);
        transform: scale(1);
        animation: pulse 2s infinite;
    }

    @keyframes pulse {
        0% {
            transform: scale(0.95);
            box-shadow: 0 0 0 0 rgba(0, 0, 0, 0.7);
        }

        70% {
            transform: scale(1);
            box-shadow: 0 0 0 10px rgba(0, 0, 0, 0);
        }

        100% {
            transform: scale(0.95);
            box-shadow: 0 0 0 0 rgba(0, 0, 0, 0);
        }
    }
</style>
