非常炫酷加载效果，大多都有=>：HTML5+CSS3 最酷的 loading 效果收集
加载效果1
代码
<style>
$colors:
hsla(337, 84, 48, 0.75)
hsla(160, 50, 48, 0.75)
hsla(190, 61, 65, 0.75)
hsla( 41, 82, 52, 0.75);
$size: 2.5em;
$thickness: 0.5em;
// Calculated variables.
$lat: ($size - $thickness) / 2;
$offset: $lat - $thickness;
.loader {
position: relative;
width: $size;
height: $size;
transform: rotate(165deg);
&:before,
&:after {
content: '';
position: absolute;
top: 50%;
left: 50%;
display: block;
width: $thickness;
height: $thickness;
border-radius: $thickness / 2;
transform: translate(-50%, -50%);
}
&:before {
animation: before 2s infinite;
}
&:after {
animation: after 2s infinite;
}
}
@keyframes before {
0% {
width: $thickness;
box-shadow:
$lat (-$offset) nth($colors, 1),
(-$lat) $offset nth($colors, 3);
}
35% {
width: $size;
box-shadow:
0 (-$offset) nth($colors, 1),
0 $offset nth($colors, 3);
}
70% {
width: $thickness;
box-shadow:
(-$lat) (-$offset) nth($colors, 1),
$lat $offset nth($colors, 3);
}
100% {
box-shadow:
$lat (-$offset) nth($colors, 1),
(-$lat) $offset nth($colors, 3);
}
}
@keyframes after {
0% {
height: $thickness;
box-shadow:
$offset $lat nth($colors, 2),
(-$offset) (-$lat) nth($colors, 4);
}
35% {
height: $size;
box-shadow:
$offset 0 nth($colors, 2),
(-$offset) 0 nth($colors, 4);
}
70% {
height: $thickness;
box-shadow:
$offset (-$lat) nth($colors, 2),
(-$offset) $lat nth($colors, 4);
}
100% {
box-shadow:
$offset $lat nth($colors, 2),
(-$offset) (-$lat) nth($colors, 4);
}
}
/**
* Attempt to center the whole thing!
*/
html,
body {
height: 100%;
}
.loader {
position: absolute;
top: calc(50% - #{$size / 2});
left: calc(50% - #{$size / 2});
}
</style>
<div class="loader"></div>
加载效果2
代码
<style>
.loader {
background: #000;
background: radial-gradient(#222, #000);
bottom: 0;
left: 0;
overflow: hidden;
position: fixed;
right: 0;
top: 0;
z-index: 99999;
}
.loader-inner {
bottom: 0;
height: 60px;
left: 0;
margin: auto;
position: absolute;
right: 0;
top: 0;
width: 100px;
}
.loader-line-wrap {
animation:
spin 2000ms cubic-bezier(.175, .885, .32, 1.275) infinite;
box-sizing: border-box;
height: 50px;
left: 0;
overflow: hidden;
position: absolute;
top: 0;
transform-origin: 50% 100%;
width: 100px;
}
.loader-line {
border: 4px solid transparent;
border-radius: 100%;
box-sizing: border-box;
height: 100px;
left: 0;
margin: 0 auto;
position: absolute;
right: 0;
top: 0;
width: 100px;
}
.loader-line-wrap:nth-child(1) {
animation-delay: -50ms;
}
.loader-line-wrap:nth-child(2) {
animation-delay: -100ms;
}
.loader-line-wrap:nth-child(3) {
animation-delay: -150ms;
}
.loader-line-wrap:nth-child(4) {
animation-delay: -200ms;
}
.loader-line-wrap:nth-child(5) {
animation-delay: -250ms;
}
.loader-line-wrap:nth-child(1) .loader-line {
border-color: hsl(0, 80%, 60%);
height: 90px;
width: 90px;
top: 7px;
}
.loader-line-wrap:nth-child(2) .loader-line {
border-color: hsl(60, 80%, 60%);
height: 76px;
width: 76px;
top: 14px;
}
.loader-line-wrap:nth-child(3) .loader-line {
border-color: hsl(120, 80%, 60%);
height: 62px;
width: 62px;
top: 21px;
}
.loader-line-wrap:nth-child(4) .loader-line {
border-color: hsl(180, 80%, 60%);
height: 48px;
width: 48px;
top: 28px;
}
.loader-line-wrap:nth-child(5) .loader-line {
border-color: hsl(240, 80%, 60%);
height: 34px;
width: 34px;
top: 35px;
}
@keyframes spin {
0%,
15% {
transform: rotate(0);
}
100% {
transform: rotate(360deg);
}
}
</style>
<div class="loader">
<div class="loader-inner">
<div class="loader-line-wrap">
<div class="loader-line"></div>
</div>
<div class="loader-line-wrap">
<div class="loader-line"></div>
</div>
<div class="loader-line-wrap">
<div class="loader-line"></div>
</div>
<div class="loader-line-wrap">
<div class="loader-line"></div>
</div>
<div class="loader-line-wrap">
<div class="loader-line"></div>
</div>
</div>
</div>
加载效果3
代码
<style>
.sk-chase {
width: 40px;
height: 40px;
position: relative;
animation: sk-chase 2.5s infinite linear both;
}
.sk-chase-dot {
width: 100%;
height: 100%;
position: absolute;
left: 0;
top: 0;
animation: sk-chase-dot 2.0s infinite ease-in-out both;
}
.sk-chase-dot:before {
content: '';
display: block;
width: 25%;
height: 25%;
background-color: #fff;
border-radius: 100%;
animation: sk-chase-dot-before 2.0s infinite ease-in-out both;
}
.sk-chase-dot:nth-child(1) { animation-delay: -1.1s; }
.sk-chase-dot:nth-child(2) { animation-delay: -1.0s; }
.sk-chase-dot:nth-child(3) { animation-delay: -0.9s; }
.sk-chase-dot:nth-child(4) { animation-delay: -0.8s; }
.sk-chase-dot:nth-child(5) { animation-delay: -0.7s; }
.sk-chase-dot:nth-child(6) { animation-delay: -0.6s; }
.sk-chase-dot:nth-child(1):before { animation-delay: -1.1s; }
.sk-chase-dot:nth-child(2):before { animation-delay: -1.0s; }
.sk-chase-dot:nth-child(3):before { animation-delay: -0.9s; }
.sk-chase-dot:nth-child(4):before { animation-delay: -0.8s; }
.sk-chase-dot:nth-child(5):before { animation-delay: -0.7s; }
.sk-chase-dot:nth-child(6):before { animation-delay: -0.6s; }
@keyframes sk-chase {
100% { transform: rotate(360deg); }
}
@keyframes sk-chase-dot {
80%, 100% { transform: rotate(360deg); }
}
@keyframes sk-chase-dot-before {
50% {
transform: scale(0.4);
} 100%, 0% {
transform: scale(1.0);
}
}
</style>
<div style="position:fixed;left:0;top:0;display:flex;align-items: center;justify-content: center;;width:100%;height: 100%;background-color: #000;">
<div class="sk-chase">
<div class="sk-chase-dot"></div>
<div class="sk-chase-dot"></div>
<div class="sk-chase-dot"></div>
<div class="sk-chase-dot"></div>
<div class="sk-chase-dot"></div>
<div class="sk-chase-dot"></div>
</div>
</div>
下面自己动手实现一个吧
思路：只需要先把loading的盒子摆在正中间，然后，里面的每个item都使用绝对定位，并且水平垂直居中，然后先旋转，再位移，就可以呈现一个环状，接着指定动画，并设置延迟即可。（其实，下边并不需要给loading指定大小，这样就不用设置上下左右都是0，margin是auto了）
<style lang="scss">
body {
margin: 0;
}
.modal {
background: #202020;
height: 100vh;
width: 100vw;
display: flex;
align-items: center;
justify-content: center;
}
.loading {
position: relative;
width: 50px;
height: 50px;
div {
top: 0;
left: 0;
bottom: 0;
right: 0;
margin: auto;
position: absolute;
width: 5px;
height: 20px;
border-radius: 5px;
background-color: #ff7300;
animation: loading-spin 1s infinite;
}
}
@keyframes loading-spin {
0% {
opacity: 0;
}
100% {
opacity: 1;
}
}
.loading .item1 {
transform: rotate(30deg) translate(0,-120%);
animation-delay: 1.1s;
}
.loading .item2 {
transform: rotate(60deg) translate(0,-120%);
animation-delay: 1s;
}
.loading .item3 {
transform: rotate(90deg) translate(0,-120%);
animation-delay: 0.9s;
}
.loading .item4 {
transform: rotate(120deg) translate(0,-120%);
animation-delay: 0.8s;
}
.loading .item5 {
transform: rotate(150deg) translate(0,-120%);
animation-delay: 0.7s;
}
.loading .item6 {
transform: rotate(180deg) translate(0,-120%);
animation-delay: 0.6s;
}
.loading .item7 {
transform: rotate(210deg) translate(0,-120%);
animation-delay: 0.5s;
}
.loading .item8 {
transform: rotate(240deg) translate(0,-120%);
animation-delay: 0.4s;
}
.loading .item9 {
transform: rotate(270deg) translate(0,-120%);
animation-delay: 0.3s;
}
.loading .item10 {
transform: rotate(300deg) translate(0,-120%);
animation-delay: 0.2s;
}
.loading .item11 {
transform: rotate(330deg) translate(0,-120%);
animation-delay: 0.1s;
}
.loading .item12 {
transform: rotate(360deg) translate(0,-120%);
animation-delay: 0s;
}
</style>
<template>
<div class="modal">
<div class="loading">
<div class="item1"></div>
<div class="item2"></div>
<div class="item3"></div>
<div class="item4"></div>
<div class="item5"></div>
<div class="item6"></div>
<div class="item7"></div>
<div class="item8"></div>
<div class="item9"></div>
<div class="item10"></div>
<div class="item11"></div>
<div class="item12"></div>
</div>
</div>
</template>
<script>
export default {
name: 'loading',
components: {
}
}
</script>