效果预览

loding.gif

代码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>loading animation</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <div class="loading-screen">
        <div class="loading">
            <span></span>
            <span></span>
            <span></span>
            <span></span>
        </div>
    </div>
</body>
</html>

* {
    margin: 0;
    padding: 0;
}

.loading-screen {
    width: 100%;
    height: 100vh;
    background-color: #2e2e2e;
    position: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading {
    width: 80px;
    display: flex;
    flex-wrap: wrap;
    animation: rotate 1.5s linear infinite;
}

@keyframes rotate {
    to {
        transform: rotate(360deg)
    }
}

.loading span {
    width: 32px;
    height: 32px;
    background-color: red;
    margin: 4px;
    animation: scale 1.5s linear infinite;
}

@keyframes scale {
    50% {
        transform: scale(1.2);
    }    
}

.loading span:nth-child(1) {
    border-radius: 50% 50% 0 50%;
    background-color: #e77f67;
    transform-origin: bottom right;
}

.loading span:nth-child(2) {
    border-radius: 50% 50% 0 50%;
    background-color: #778beb;
    transform-origin: bottom right;
    animation-delay: .5s;
}

.loading span:nth-child(3) {
    border-radius: 50% 50% 0 50%;
    background-color: #f8a5c2;
    transform-origin: top right;
    animation-delay: 1.5s;
}

.loading span:nth-child(4) {
    border-radius: 0 50% 50% 50%;
    background-color: #f5cd79;
    transform-origin: top left;
    animation-delay: 1s;
}