【css】css3实现弹跳小球

html:

<div></div>
<div></div>

css:

*{
            margin: 0;
            padding: 0;
        }
        body {
            width: 100vw;
            height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            align-items: flex-start;
            background: #2c3e50;
        }

        div {
            position: absolute;
            width: 100px;
            height: 100px;
            left: 30%;
            top: 0px;
            transform: translate(0vw, 0);
            background: radial-gradient(at right top, #f39c12, #d35400);
            border-radius: 50%;
            animation-name: jump;
            animation-duration: 2s;
            animation-iteration-count: infinite;
            animation-timing-function: ease-in;
        }

        div:nth-child(2) {
            animation-delay: .2s;
            left: 60%;
        }

        @keyframes jump {
            0% {
                transform: translateY(0);
                animation-timing-function: ease-in;
            }

            30% {
                transform: translateY(10vh);
                animation-timing-function: ease-in;
            }

            60% {
                transform: translateY(40vh);
                animation-timing-function: ease-in;
            }

            80% {
                transform: translateY(60vh);
                animation-timing-function: ease-in;
            }

            95% {
                transform: translateY(75vh);
                animation-timing-function: ease-in;
            }

            15%,
            45%,
            70%,
            85%,
            100% {
                transform: translateY(80vh);
                animation-timing-function: ease-out;
            }
        }