webpage-test/loader.html at main · mrjanith/webpage-test · GitHub

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<!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">
    <title>Document</title>


    <style>
        :root {
  --main-color: #ecf0f1;
  --point-color: #555;
  --size: 5px;
}

.loader {
  background-color: var(--main-color);
  overflow: hidden;
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0; left: 0;
  display: flex;
  align-items: center;
  align-content: center;
  justify-content: center;
  z-index: 100000;
}

.loader__element {
  border-radius: 100%;
  border: var(--size) solid var(--point-color);
  margin: calc(var(--size)*2);
}

.loader__element:nth-child(1) {
  animation: preloader .6s ease-in-out alternate infinite;
}
.loader__element:nth-child(2) {
  animation: preloader .6s ease-in-out alternate .2s infinite;
}

.loader__element:nth-child(3) {
  animation: preloader .6s ease-in-out alternate .4s infinite;
}

@keyframes preloader {
  100% { transform: scale(2); }
}
    </style>


</head>
<body>
    <div class="loader">
        <span class="loader__element"></span>
        <span class="loader__element"></span>
        <span class="loader__element"></span>
      </div>


</body>
</html>