<div class="bouncing-loader">
    <div></div>
    <div></div>
    <div></div>
</div>

 @keyframes bouncing-loader {
            to {
                opacity: 0.1;
                transform: translate3d(0, -1rem, 0);
            }
        }

        .bouncing-loader {
            display: flex;
            justify-content: center;
        }

        .bouncing-loader > div {
            width: 1rem;
            height: 1rem;
            margin: 3rem 0.2rem;
            background: #8385aa;
            border-radius: 50%;
            animation: bouncing-loader 0.6s infinite alternate;
        }

        .bouncing-loader > div:nth-child(2) {
            animation-delay: 0.2s;
        }

        .bouncing-loader > div:nth-child(3) {
            animation-delay: 0.4s;
        }