css实现三种loading加载动画效果代码-html代码-BFW代码库

代码语言：html

代码描述：css实现三种loading加载动画效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >

<head>
  <meta charset="UTF-8">
  

  
  
  
<style>
:root {
  --radius: 50%;
  --size: 2em;
  --offset: 25px;
  --background: #f5f5f7;
}

body {
  display: grid;
  place-items: center;
  width: 100vw;
  height: 100vh;
  background-color: var(--background);
}

article {
  display: flex;
  justify-content: space-around;
  width: 100%;
}

.dot-spinner,
.rect-spinner {
  display: grid;
  place-items: center;
  position: relative;
  width: 4.25em;
  height: 4.25em;
}
.dot-spinner:focus,
.rect-spinner:focus {
  outline: 4px solid blue;
  border-radius: var(--radius);
}

.rect-spinner {
  width: 4em;
  height: 4em;
}
.rect-spinner .container {
  margin-left: -8px;
  margin-top: 3px;
  --size: 1.5em;
}

.spinner-block {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.container {
  width: var(--size);
  border-radius: var(--radius);
  aspect-ratio: 1;
  position: relative;
}

.dot {
  --size: 1em;
  --degrees: 0deg;
  aspect-ratio: 1;
  position: absolute;
  border-radius: var(--radius);
  width: var(--size);
  background-color: #1d1d1d;
  opacity: 0;
  top: calc(var(--size) / 2);
  left: calc(var(--size) / 2);
  animation: animate-in;
  animation-duration: 900ms;
  animation-timing-function: ease-in-out;
  animation-fill-mode: alternate;
  animation-iteration-count: infinite;
}

.rect {
  --size: 1em;
  --degrees: 0deg;
  position: absolute;
  width: var(--size);
  aspect-ratio: 4/1;
  top: calc(var(--size) / 2);
  left: calc(var(--size) / 2);
  background-color: #1d1d1d;
  border-radius: 20px;
  opacity: 0;
  animation: animate-in;
  animation-duration: 800ms;
  animation-timing-function: ease-in-out;
  animation-fill-mode: alternate;
  animation-iteration-count: infinite;
}

.comet-spinner {
  --radius: 1em;
  --tracksize: 0.75em;
  --degrees: 0deg;
  width: calc(var(--radius) * 2 + var(--tracksize));
  aspect-ratio: 1;
  border-radius: 50%;
  padding: var(--tracksize);
  background: conic-gradient(from var(--degrees), #1BB8F7, #F8509C calc(var(--degrees) + 140deg), transparent calc(var(--degrees) + 210deg));
  position: relative;
  display: grid;
  place-items: center;
  animation: comet linear 1000ms infinite;
}
.comet-spinner .inner-circle {
  width: calc(var(--radius) * 2 + var(--tracksize));
  background-color: var(--background);
  position: absolute;
  aspect-ratio: 1;
  border-radius: 50%;
}
.comet-spinner .comet {
  width: var(--tracksize);
  height: var(--tracksize);
  background-color: #1BB8F7;
  position: absolute;
  border-radius: 50%;
  border: 2px solid #FFDC55;
  z-index: 3;
  left: calc((var(--tracksize) / 2));
  top: 0;
  margin: -2px;
  translate: calc(cos(var(--degrees)) * var(--radius)) calc(sin(var(--degrees)) * var(--radius));
}

.dot:nth-of-type(1) {
  --degrees: 0 * 360deg / 8;
  transform: translate(calc(cos(var(--degrees)) * var(--offset)), calc(sin(var(--degrees)) * var(--offset)));
  animation-delay: calc(0 * 100ms);
}

.dot:nth-of-type(2) {
  --degrees: 1 * 360deg / 8;
  transform: translate(calc(cos(var(--degrees)) * var(--offset)), calc(sin(var(--degrees)) * var(--offset)));
  animation-delay: calc(1 * 100ms);
}

.dot:nth-of-type(3) {
  --degrees: 2 * 360deg / 8;
  transform: translate(calc(cos(var(--degrees)) * var(--offset)), calc(sin(var(--degrees)) * var(--offset)));
  animation-delay: calc(2 * 100ms);
}

.dot:nth-of-type(4) {
  --degrees: 3 * 360deg / 8;
  transform: translate(calc(cos(var(--degrees)) * var(--offset)), calc(sin(var(--degrees)) * var(--offset)));
  animation-delay: calc(3 * 100ms);
}

.dot:nth-of-type(5) {
  --degrees: 4 * 360deg / 8;
  transform: translate(calc(cos(var(--degrees)) * var(--offset)), calc(sin(var(--degrees)) * var(--offset)));
  animation-delay: calc(4 * 100ms);
}

.dot:nth-of-type(6) {
  --degrees: 5 * 360deg / 8;
  transform: translate(calc(cos(var(--degrees)) * var(--offset)), calc(sin(var(--degrees)) * var(--offset)));
  animation-delay: calc(5 * 100ms);
}

.dot:nth-of-type(7) {
  --degrees: 6 * 360deg / 8;
  transform: translate(calc(cos(var(--degrees)) * var(--offset)), calc(sin(var(--degrees)) * var(--offset)));
  animation-delay: calc(6 * 100ms);
}

.dot:nth-of-type(8) {
  --degrees: 7 * 360deg / 8;
  transform: translate(calc(cos(var(--degrees)) * var(--offset)), calc(sin(var(--degrees)) * var(--offset)));
  animation-delay: calc(7 * 100ms);
}

.rect:nth-of-type(0) {
  --degrees: 0 * 360deg / 16;
  transform: rotate(calc(var(--degrees))) translateX(var(--offset));
  animation-delay: calc(0 * 50ms);
}

.rect:nth-of-type(1) {
  --degrees: 1 * 360deg / 16;
  transform: rotate(calc(var(--degrees))) translateX(var(--offset));
  animation-delay: calc(1 * 50ms);
}

.rect:nth-of-type(2) {
  --degrees: 2 * 360deg / 16;
  transform: rotate(calc(var(-.........完整代码请登录后点击上方下载按钮下载查看