css3进度条动画样式

这是一款基于Bootstrap的纯CSS3进度条动画样式特效。该CSS3进度条通过阴影制作立体效果，并使用CSS3 animation来制作进度条的动画特效。

使用方法

在页面中引入bootstrap.min.css文件。

<link href="css/bootstrap.min.css" rel="stylesheet">                  
                

HTML结构

该CSS3进度条的HTML结构如下：

<div class="container">
    <div class="row">
        <div class="col-md-offset-3 col-md-6">
            <div class="progress green">
                <h3 class="progress-title">HTML5</h3>
                <div class="progress-bar" style="width:65%; background:#21da9a;">
                    <div class="progress-value">65%</div>
                </div>
            </div>

            <div class="progress pink">
                <h3 class="progress-title">CSS3</h3>
                <div class="progress-bar" style="width:87%; background:#ff1170;">
                    <div class="progress-value">87%</div>
                </div>
            </div>

            <div class="progress yellow">
                <h3 class="progress-title">J-Query</h3>
                <div class="progress-bar" style="width:55%; background:#ffa900;">
                    <div class="progress-value">55%</div>
                </div>
            </div>

            <div class="progress blue">
                <h3 class="progress-title">PHP</h3>
                <div class="progress-bar" style="width:95%; background:#294bdc;">
                    <div class="progress-value">95%</div>
                </div>
            </div>
        </div>
    </div>
</div>
                

CSS样式

通过下面的CSS代码来对该CSS3进度条进行美化，以及制作进度条的动画效果。

.progress{
    height: 7px;
    background: #e3e3e3;
    border-radius: 0;
    box-shadow: none;
    margin: 40px 0 80px;
    overflow: visible;
    position: relative;
}
.progress .progress-title{
    padding: 7px 10px;
    margin: 0;
    background: #393a3d;
    border-radius: 5px 0 0 5px;
    box-shadow: 0 7px 7px rgba(0,0,0,0.4);
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    text-transform: uppercase;
    position: absolute;
    top: -13px;
    left: 0;
    z-index: 1;
}
.progress .progress-title:after{
    content: "";
    border-left: 17px solid #393a3d;
    border-top: 17px solid transparent;
    border-bottom: 17px solid transparent;
    position: absolute;
    top: 0;
    right: -17px;
}
.progress .progress-bar{
    box-shadow: none;
    border-radius: 0;
    position: relative;
    -webkit-animation: animate-positive 2s;
    animation: animate-positive 2s;
}
.progress .progress-bar:after{
    content: "";
    width: 20px;
    height: 20px;
    border-radius: 50%;
    box-shadow: 0 5px 5px rgba(0,0,0,0.6);
    background: #fff;
    position: absolute;
    right: -5px;
    top: -6px;
}
.progress .progress-value{
    width: 45px;
    height: 30px;
    line-height: 30px;
    border-radius: 3px;
    background: #393a3d;
    box-shadow: 0 5px 5px rgba(0,0,0,0.4);
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    text-align: center;
    position: absolute;
    bottom: 30px;
    right: -17px;
}
.progress .progress-value:after{
    content: "";
    border-top: 7px solid #393a3d;
    border-left: 7px solid transparent;
    border-right: 7px solid transparent;
    position: absolute;
    bottom: -7px;
    left: 35%;
}
.progress.green .progress-bar:after{ border: 5px solid #21da9a; }
.progress.pink .progress-bar:after{ border: 5px solid #ff1170; }
.progress.blue .progress-bar:after{ border: 5px solid #294bdc; }
.progress.yellow .progress-bar:after{ border: 5px solid #ffa900; }
@-webkit-keyframes animate-positive{
    0% { width: 0; }
}
@keyframes animate-positive{
    0% { width: 0; }
}