【转】 CSS3实现10种Loading效果

昨晚用CSS3实现了几种常见的Loading效果，虽然很简单，但还是分享一下，顺便也当是做做笔记……

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第1种效果：

代码如下：

<div class="loading">        <span></span>        <span></span>        <span></span>        <span></span>        <span></span></div>

.loading{            width: 80px;            height: 40px;            margin: 0 auto;            margin-top:100px;        }        .loading span{            display: inline-block;            width: 8px;            height: 100%;            border-radius: 4px;            background: lightgreen;            -webkit-animation: load 1s ease infinite;        }        @-webkit-keyframes load{            0%,100%{                height: 40px;                background: lightgreen;            }            50%{                height: 70px;                margin: -15px 0;                background: lightblue;            }        }        .loading span:nth-child(2){            -webkit-animation-delay:0.2s;        }        .loading span:nth-child(3){            -webkit-animation-delay:0.4s;        }        .loading span:nth-child(4){            -webkit-animation-delay:0.6s;        }        .loading span:nth-child(5){            -webkit-animation-delay:0.8s;        }

第2种效果：

代码如下：

<div class="loading">        <span></span></div>

.loading{            width: 150px;            height: 4px;            border-radius: 2px;            margin: 0 auto;            margin-top:100px;            position: relative;            background: lightgreen;            -webkit-animation: changeBgColor 1.04s ease-in infinite alternate;        }        .loading span{            display: inline-block;            width: 16px;            height: 16px;            border-radius: 50%;            background: lightgreen;            position: absolute;            margin-top: -7px;            margin-left:-8px;            -webkit-animation: changePosition 1.04s ease-in infinite alternate;        }        @-webkit-keyframes changeBgColor{            0%{                background: lightgreen;            }            100%{                background: lightblue;            }        }        @-webkit-keyframes changePosition{            0%{                background: lightgreen;            }            100%{                margin-left: 142px;                background: lightblue;            }        }

第3-5种效果：

代码如下：

<div class="loading">        <span></span>        <span></span>        <span></span>        <span></span>        <span></span></div>

第3-5种效果的css样式分别为：

.loading{            width: 150px;            height: 15px;            margin: 0 auto;            margin-top:100px;        }        .loading span{            display: inline-block;            width: 15px;            height: 100%;            margin-right: 5px;            border-radius: 50%;            background: lightgreen;            -webkit-animation: load 1.04s ease infinite;        }        .loading span:last-child{            margin-right: 0px;         }        @-webkit-keyframes load{            0%{                opacity: 1;            }            100%{                opacity: 0;            }        }        .loading span:nth-child(1){            -webkit-animation-delay:0.13s;        }        .loading span:nth-child(2){            -webkit-animation-delay:0.26s;        }        .loading span:nth-child(3){            -webkit-animation-delay:0.39s;        }        .loading span:nth-child(4){            -webkit-animation-delay:0.52s;        }        .loading span:nth-child(5){            -webkit-animation-delay:0.65s;        }

.loading{            width: 150px;            height: 15px;            margin: 0 auto;            margin-top:100px;        }        .loading span{            display: inline-block;            width: 15px;            height: 100%;            margin-right: 5px;            border-radius: 50%;            background: lightgreen;            -webkit-animation: load 1.04s ease infinite;        }        .loading span:last-child{            margin-right: 0px;         }        @-webkit-keyframes load{            0%{                opacity: 1;                -webkit-transform: scale(1.3);            }            100%{                opacity: 0.2;                -webkit-transform: scale(.3);            }        }        .loading span:nth-child(1){            -webkit-animation-delay:0.13s;        }        .loading span:nth-child(2){            -webkit-animation-delay:0.26s;        }        .loading span:nth-child(3){            -webkit-animation-delay:0.39s;        }        .loading span:nth-child(4){            -webkit-animation-delay:0.52s;        }        .loading span:nth-child(5){            -webkit-animation-delay:0.65s;        }

.loading{            width: 150px;            height: 15px;            margin: 0 auto;            position: relative;            margin-top:100px;        }        .loading span{            position: absolute;            width: 15px;            height: 100%;            border-radius: 50%;            background: lightgreen;            -webkit-animation: load 1.04s ease-in infinite alternate;        }        @-webkit-keyframes load{            0%{                opacity: 1;                -webkit-transform: translate(0px);            }            100%{                opacity: 0.2;                -webkit-transform: translate(150px);            }        }        .loading span:nth-child(1){            -webkit-animation-delay:0.13s;        }        .loading span:nth-child(2){            -webkit-animation-delay:0.26s;        }        .loading span:nth-child(3){            -webkit-animation-delay:0.39s;        }        .loading span:nth-child(4){            -webkit-animation-delay:0.52s;        }        .loading span:nth-child(5){            -webkit-animation-delay:0.65s;        }

第6-8种效果：

代码如下：

<div class="loading">        <span></span>        <span></span>        <span></span>        <span></span>        <span></span></div>

第6-8种效果的css样式分别为：

.loading{            width: 150px;            height: 15px;            margin: 0 auto;            margin-top:100px;            text-align: center;        }        .loading span{            display: inline-block;            width: 15px;            height: 100%;            margin-right: 5px;