<section class="container">
<div class="progress">
<span style="width: 20%"><span>20%</span></span>
</div>
<div class="progress">
<span class="green" style="width: 40%"><span>40%</span></span>
</div>
<div class="progress">
<span class="orange" style="width: 60%"><span>60%</span></span>
</div>
<div class="progress">
<span class="red" style="width: 80%"><span>80%</span></span>
</div>
<div class="progress">
<span class="blue" style="width: 100%"><span>100%</span></span>
</div>
</section>
从HTML结构中我们可以看出，类名为progress的div是整个进度条的父容器，里面的span则是当前进度，通过width来定义不同的进度值，同时定义不同的颜色类，比如orange，以便待会在CSS中进行样式渲染。
CSS代码：
.progress {
height: 20px
background: #ebebeb
border-left: 1px solid transparent
border-right: 1px solid transparent
border-radius: 10px
}
.progress >span {
position: relative
float: left
margin: 0 -1px
min-width: 30px
height: 18px
line-height: 16px
text-align: right
background: #cccccc
border: 1px solid
border-color: #bfbfbf #b3b3b3 #9e9e9e
border-radius: 10px
background-image: -webkit-linear-gradient(top, #f0f0f0 0%, #dbdbdb 70%, #cccccc 100%)
background-image: -moz-linear-gradient(top, #f0f0f0 0%, #dbdbdb 70%, #cccccc 100%)
background-image: -o-linear-gradient(top, #f0f0f0 0%, #dbdbdb 70%, #cccccc 100%)
background-image: linear-gradient(to bottom, #f0f0f0 0%, #dbdbdb 70%, #cccccc 100%)
-webkit-box-shadow: inset 0 1px rgba(255, 255, 255, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2)
box-shadow: inset 0 1px rgba(255, 255, 255, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2)
}
.progress >span >span {
padding: 0 8px
font-size: 11px
font-weight: bold
color: #404040
color: rgba(0, 0, 0, 0.7)
text-shadow: 0 1px rgba(255, 255, 255, 0.4)
}
.progress >span:before {
content: ''
position: absolute
top: 0
bottom: 0
left: 0
right: 0
z-index: 1
height: 18px
background: url("../img/progress.png") 0 0 repeat-x
border-radius: 10px
}
.progress .green {
background: #85c440
border-color: #78b337 #6ba031 #568128
background-image: -webkit-linear-gradient(top, #b7dc8e 0%, #99ce5f 70%, #85c440 100%)
background-image: -moz-linear-gradient(top, #b7dc8e 0%, #99ce5f 70%, #85c440 100%)
background-image: -o-linear-gradient(top, #b7dc8e 0%, #99ce5f 70%, #85c440 100%)
background-image: linear-gradient(to bottom, #b7dc8e 0%, #99ce5f 70%, #85c440 100%)
}
.progress .red {
background: #db3a27
border-color: #c73321 #b12d1e #8e2418
background-image: -webkit-linear-gradient(top, #ea8a7e 0%, #e15a4a 70%, #db3a27 100%)
background-image: -moz-linear-gradient(top, #ea8a7e 0%, #e15a4a 70%, #db3a27 100%)
background-image: -o-linear-gradient(top, #ea8a7e 0%, #e15a4a 70%, #db3a27 100%)
background-image: linear-gradient(to bottom, #ea8a7e 0%, #e15a4a 70%, #db3a27 100%)
}
.progress .orange {
background: #f2b63c
border-color: #f0ad24 #eba310 #c5880d
background-image: -webkit-linear-gradient(top, #f8da9c 0%, #f5c462 70%, #f2b63c 100%)
background-image: -moz-linear-gradient(top, #f8da9c 0%, #f5c462 70%, #f2b63c 100%)
background-image: -o-linear-gradient(top, #f8da9c 0%, #f5c462 70%, #f2b63c 100%)
background-image: linear-gradient(to bottom, #f8da9c 0%, #f5c462 70%, #f2b63c 100%)
}
.progress .blue {
background: #5aaadb
border-color: #459fd6 #3094d2 #277db2
background-image: -webkit-linear-gradient(top, #aed5ed 0%, #7bbbe2 70%, #5aaadb 100%)
background-image: -moz-linear-gradient(top, #aed5ed 0%, #7bbbe2 70%, #5aaadb 100%)
background-image: -o-linear-gradient(top, #aed5ed 0%, #7bbbe2 70%, #5aaadb 100%)
background-image: linear-gradient(to bottom, #aed5ed 0%, #7bbbe2 70%, #5aaadb 100%)
}
