【动画消消乐】HTML+CSS 自定义加载动画 054

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="style.css">
    <title>Document</title>
</head>
<body>
    <section><span></span></section>
</body>
</html>

html, body {
  margin: 0;
  height: 100%;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  background: #263238;
}

section {
  width: 650px;
  height: 300px;
  padding: 10px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  /* 红色边框仅作提示 */
  border: 2px solid red;
}

span {
  width: 96px;
  height: 96px;
  display: inline-block;
  position: relative;
}

span::before, span::after {
  content: '';
  width: 96px;
  height: 96px;
  border: 6px solid white;
  position: absolute;
  left: 0;
  top: 0;
  animation: scaleOut 4s ease-in-out infinite;
}

span::after {
  border-color: red;
  animation-delay: 2s;
}

@keyframes scaleOut {
  0% {
    transform: scale(0);
  }
  100% {
    transform: scale(1)
  }
}

 width: 96px;
  height: 96px;
  position: relative;

  content: '';
  width: 96px;
  height: 96px;
  border: 6px solid white;
  position: absolute;
  left: 0;
  top: 0;

span::after {
  border-color: red;
}

 animation: loading 4s ease-in-out infinite;

@keyframes loading {
  0% {
    transform: scale(0);
  }
  100% {
    transform: scale(1)
  }
}

span::after {
  animation-delay: 2s;
}