border:0
border-top:1px solid #D5D5D5
}
你自己的HTML代码效果就是对的了，有时候没必要过于借助css，加了那些样式反而不对了
<div class="line_01">小小分隔线 单标签实现</div>
.demo_line_01{padding: 0 20px 0
margin: 20px 0
line-height: 1px
border-left: 200px solid #ddd
border-right: 200px solid #ddd
text-align: center
<div class="line_02"><span>小小分隔线 巧用色实现</span></div>
.demo_line_02{height: 1px
border-top: 1px solid #ddd
text-align: center
}
.demo_line_02 span{
position: relative
top: -8px
background: #fff
padding: 0 20px
}
<div class="line_03"><b></b><span>小小分隔线 inline-block实现</span><b></b></div>
.demo_line_03{width:600px
}
.demo_line_03 b{
background: #ddd
margin-top: 4px
display: inline-block
width: 180px
height: 1px
_overflow: hidden
vertical-align: middle
}
.demo_line_03 span{
display: inline-block
width: 220px
vertical-align: middle
}
