【HTML】三种加载动画

加载动画

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>实现动画特效title>
head>
<style>
    *{
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    body{
        background-color: bisque;
      
    }
    section{
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100vh;
    }
            /* span是行内元素,必须转换成块状元素才能设置宽高 */
    .dot{
        /* flex属于行内块元素 */
        display: flex;
        width: 250px;
        height: 250px;
        position: relative;
    }
    .dot span{
     position: absolute;
     left: 50%;
        width:10px ;
        height: 10px;
        border-radius: 50%;
        background-color: black;
        transform: rotate(calc(45deg * var(--i)));
        /* transform-origin 属性允许您改变被转换元素的位置。
2D 转换元素能够改变元素 x 和 y 轴。3D 转换元素还能改变其 Z 轴。 */
        transform-origin:center 40px ;
        animation: loading 1.2s ease-in infinite;
        animation-delay: calc(0.06s * var(--i));
    }
    /* 设置动画 */
    @keyframes  loading{
        0%{opacity: 1;}
        100%{opacity: 0.2;}
    }
    

style>
<body>
    <section>
    <div class="dot">
       
        <span style="--i:1">span>
        <span style="--i:2">span>
        <span style="--i:3">span>
        <span style="--i:4">span>
        <span style="--i:5">span>
        <span style="--i:6">span>
        <span style="--i:7">span>
        <span style="--i:8">span>
    div>
section>
body>
html>

加载动画

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>仿液体加载动画title>
head>
<style>
    *{padding: 0; margin: 0; box-sizing: border-box;}
    body{
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100vh;
    }
    .loader{
        width: 550px;
        height: 200px;
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: white;
        filter: blur(10px) contrast(18);
    }
    .loader_item{
        position: relative;
        left: 15px;
        width: 55px;
        height: 55px;
        border-radius: 100%;
        background-color: #0e4961;
    }
    .loader_item:nth-child(odd){
        animation:yeti 3.5s 0.2s linear infinite ;
    }
    .loader_item:nth-child(2n){
        animation:yeti1  2.3s ease-in-out .1s infinite ;
    }
    .loader_item:nth-child(4n){
      animation-direction: reverse;
    }
    @keyframes yeti1{
        50%{transform: scale(1.8);}
        70%{transform: scale(0.8);}
    }
    @keyframes yeti{
        0%{
            transform: rotate(0deg) translate(50px);
        }
        100%{
            transform: rotate(360deg) translate(50px);
        }
    }
style>
<body>
    <div class="loader">
        <div class="loader_item">div>
        <div class="loader_item">div>
        <div class="loader_item">div>
        <div class="loader_item">div>
        <div class="loader_item">div>
        <div class="loader_item">div>
        <div class="loader_item">div>
        <div class="loader_item">div>
    div>
body>
html>

竖线加载动画

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>加载动画title>
head>
<style>
body{background-color: pink;}
/* 设置位置 */
.loading{
display: flex;
position:absolute;
top:50%;left: 50%;
/* X轴移动50%,Y轴移动50%,就是居中 */
transform: translate(-50%,-50%);
align-items: center;
}
/* 小竖条 */
.item{
  
    height: 70px;
    width: 4px;
    background-color: white;
    margin-right: 4px;
    border-radius: 15%;
    /* 动画名称,循环时间,循环次数 */
    animation: loading 1s infinite;
}
/* 设置动画 */
@keyframes loading{
 0%{height: 0px;}
 50%{height: 50px;}
 100%{height: 0px;}
}
/* 为每一个竖条设置延时 */
.item:nth-child(2){
    animation-delay: 0.1s;
} 
.item:nth-child(3){
    animation-delay: 0.2s;
} .item:nth-child(4){
    animation-delay: 0.3s;
} .item:nth-child(5){
    animation-delay: 0.4s;
} .item:nth-child(6){
    animation-delay: 0.5s;
} .item:nth-child(7){
    animation-delay: 0.6s;
} 
.item:nth-child(8){
    animation-delay: 0.7s;
} 

style>
<body>
    <div class="loading">
        <div class="item">div>
        <div class="item">div>
        <div class="item">div>
        <div class="item">div>
        <div class="item">div>
        <div class="item">div>
        <div class="item">div>
        <div class="item">div>
    div>
body>
html>

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