css3 loading （缓冲，等待效果实现）

效果一

HTML

<div class="zh-loading"><ul><li></li><li></li><li></li><li></li></ul></div>

CSS

web前端开发学习Q-q-u-n： 731771211，分享学习的方法和需要注意的小细节，不停更新最新的教程和学习方法（详细的前端项目实战教学视频，PDF）
.zh-loading{position: absolute;z-index: 9;left: 0;top: 0;width: 100%;height: 100%;background-color: rgba(0,0,0,0.75);}
.zh-loading ul{position: absolute;z-index: 2;left: 50%;top: 50%;height: 60px;overflow: hidden;-webkit-transform: translate(-50%, -50%);-ms-transform: translate(-50%, -50%);transform: translate(-50%, -50%);}
.zh-loading ul li{float: left;height: 100%;width: 4px;margin: 0 2px;background-color: #ccc;-webkit-animation: stretchdelay 1.2s infinite ease-in-out;animation: stretchdelay 1.2s infinite ease-in-out;}
.zh-loading ul li:nth-of-type(2){-webkit-animation-delay: -1.1s;animation-delay: -1.1s;}
.zh-loading ul li:nth-of-type(3){-webkit-animation-delay: -1.0s;animation-delay: -1.0s;}
.zh-loading ul li:nth-of-type(4){-webkit-animation-delay: -0.9s;animation-delay: -0.9s;}
@-webkit-keyframes stretchdelay{0%, 40%, 100%{-webkit-transform: scaleY(0.4)}
20%{-webkit-transform: scaleY(1.0)}}
@keyframes stretchdelay{0%, 40%, 100%{transform: scaleY(0.4);-webkit-transform: scaleY(0.4);}
20%{transform: scaleY(1.0);-webkit-transform: scaleY(1.0);}}

效果二

web前端开发学习Q-q-u-n： 731771211，分享学习的方法和需要注意的小细节，不停更新最新的教程和学习方法（详细的前端项目实战教学视频，PDF）
<style type="text/css">
    @keyframes load{
        0%{transform:rotate(0)}
        100%{transform:rotate(-360deg)}
    }
    #load{width: 200px;height: 200px;animation:load 1s  linear infinite; transform-origin:center center;} 
</style>
<div id="load">
    <svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"  width="200px" height="200px"  viewBox="0 0 200 200" xml:space="preserve">
        <g>
            <linearGradient id="right" gradientUnits="userSpaceOnUse" x1="150" y1="20" x2="150" y2="180">
                <stop  offset="0" style="stop-color:#4886CD"/>
                <stop  offset="1" style="stop-color:#9DBFE4"/><!--蓝到浅蓝渐变-->
            </linearGradient>
            <path fill="url(#right)" d="M100,0v20c44.1,0,80,35.9,80,80c0,44.1-35.9,80-80,80v20c55.2,0,100-44.8,100-100S155.2,0,100,0z"/><!--右半圆环-->
            <linearGradient id="left" gradientUnits="userSpaceOnUse" x1="50" y1="0" x2="50" y2="180">
                <stop  offset="0" style="stop-color:#FFFFFF"/>
                <stop  offset="1" style="stop-color:#9DBFE4"/><!--浅蓝到白色渐变-->
            </linearGradient>
            <path fill="url(#left)" d="M20,100c0-44.1,35.9-80,80-80V0C44.8,0,0,44.8,0,100s44.8,100,100,100v-20C55.9,180,20,144.1,20,100z"/><!--左半圆环-->
            <circle fill="#4886CD" cx="100" cy="10" r="10"/>
        </g>
    </svg>
</div>

效果三

HTML

<ul class="zh-loading"><li></li><li></li><li></li><li></li></ul>

CSS

web前端开发学习Q-q-u-n： 731771211，分享学习的方法和需要注意的小细节，不停更新最新的教程和学习方法（详细的前端项目实战教学视频，PDF）
.zh-loading{display: none;margin: 1rem auto 0;width: 34px;height: 34px;}
.zh-loading li{float: left;width: 14px;height: 14px;margin: 2px 0 0 2px;background-color: #F2F2F2;}
.zh-loading li:nth-of-type(1){-webkit-animation: loadingEffect 1s ease 1s infinite;-ms-animation: loadingEffect 1s ease 1s infinite;animation: loadingEffect 1s ease 1s infinite;}
.zh-loading li:nth-of-type(2){-webkit-animation: loadingEffect 1s ease .25s infinite;-ms-animation: loadingEffect 1s ease .25s infinite;animation: loadingEffect 1s ease .25s infinite;}
.zh-loading li:nth-of-type(3){-webkit-animation: loadingEffect 1s ease .75s infinite;-ms-animation: loadingEffect 1s ease .75s infinite;animation: loadingEffect 1s ease .75s infinite;}
.zh-loading li:nth-of-type(4){-webkit-animation: loadingEffect 1s ease .5s infinite;-ms-animation: loadingEffect 1s ease .5s infinite;animation: loadingEffect 1s ease .5s infinite;}
@-webkit-keyframes loadingEffect{
    to{background-color: #BCBCBC;}
}
@-ms-keyframes loadingEffect{
    to{background-color: #BCBCBC;}
}
@keyframes loadingEffect{
    to{background-color: #BCBCBC;}
}