html炫酷loading

以下是一个使用纯 HTML 和 CSS 实现的简单 loading 效果示例：

<div class="loading">
  <div class="loading-bar"></div>
  <div class="loading-bar"></div>
  <div class="loading-bar"></div>
  <div class="loading-bar"></div>
  <div class="loading-bar"></div>
</div>

.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.loading-bar {
  width: 10px;
  height: 25px;
  margin-right: 5px;
  background-color: #fff;
  animation: loading 1s ease-in-out infinite;
}

.loading-bar:nth-child(1) {
  animation-delay: 0s;
}

.loading-bar:nth-child(2) {
  animation-delay: 0.1s;
}

.loading-bar:nth-child(3) {
  animation-delay: 0.2s;
}

.loading-bar:nth-child(4) {
  animation-delay: 0.3s;
}

.loading-bar:nth-child(5) {
  animation-delay: 0.4s;
}

@keyframes loading {
  0% {
    transform: scale(1);
  }
  20% {
    transform: scale(1, 2.5);
  }
  40% {
    transform: scale(1);
  }
}

效果如下：


你可以根据需要调整各个元素的样式和动画效果，实现更加炫酷的 loading 效果。