心形加载.gif

首先，Html

 <ul class="heart">
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
    </ul>

CSS

        /* 心形加载样式 */
        .heart {
            display: flex;
            margin: 10rem auto;
            /* transform: translate(25%, 50%); */
        }

        .heart li {
            list-style: none;
            height: 20px;
            width: 20px;
            margin-left: 8px;
            border-radius: 5rem;
            /* background: red; */

        }

        li:nth-child(1) {
            background-color: #f62e74;
            animation: animate0 4s infinite;
        }

        li:nth-child(2) {
            background-color: #f45330;
            animation: animate1 4s infinite;
            animation-delay: 0.15s;
        }

        li:nth-child(3) {
            background-color: #ffc883;
            animation: animate2 4s infinite;
            animation-delay: 0.3s;
        }

        li:nth-child(4) {
            background-color: #30d268;
            animation: animate3 4s infinite;
            animation-delay: 0.45s;
        }

        li:nth-child(5) {
            background-color: #006cb4;
            animation: animate4 4s infinite;
            animation-delay: 0.6s;
        }

        li:nth-child(6) {
            background-color: #784697;
            animation: animate3 4s infinite;
            animation-delay: 0.75s;
        }

        li:nth-child(7) {
            background-color: #ffc883;
            animation: animate2 4s infinite;
            animation-delay: 0.9s;
        }

        li:nth-child(8) {
            background-color: #f45330;
            animation: animate1 4s infinite;
            animation-delay: 1.05s;
        }

        li:nth-child(9) {
            background-color: #f62e74;
            animation: animate0 4s infinite;
            animation-delay: 1.2s;
        }

        @keyframes animate0 {

            30%,
            50% {
                height: 60px;
                transform: translateY(-30px);
            }

            75%,
            100% {
                height: 20px;
                transform: translateY(0);
            }
        }

        @keyframes animate1 {

            30%,
            50% {
                height: 125px;
                transform: translateY(-62.5px);
            }

            75%,
            100% {
                height: 20px;
                transform: translateY(0);
            }
        }

        @keyframes animate2 {

            30%,
            50% {
                height: 160px;
                transform: translateY(-75px);
            }

            75%,
            100% {
                height: 20px;
                transform: translateY(0);
            }
        }

        @keyframes animate3 {

            30%,
            50% {
                height: 180px;
                transform: translateY(-60px);
            }

            75%,
            100% {
                height: 20px;
                transform: translateY(0);
            }
        }

        @keyframes animate4 {

            30%,
            50% {
                height: 190px;
                transform: translateY(-45px);
            }

            75%,
            100% {
                height: 20px;
                transform: translateY(0);
            }
        }

        /* 心形加载样式结束 */

重点在keyframes的进度，在50%~75%间有暂停，暂停之后再执行收回操作

爱心发射biu.gif