<div class="sigma-middle-line">
<span class="sigma-line-text">Sigma 的中横线</span>
</div>
</div> .sigma-content{
margin: 50px
text-align: center
background-color: #fff
}
.sigma-middle-line:before{
content: ''
display: block
height: 1px
width: 100%
background-color: #999/*颜色需与主题大背景色一致*/
position: relative
top: 10px/*调节线高*/
left: 0
}
.sigma-line-text{
display: inline-block
background: #fff
padding: 0 18px 0 18px
position: relative
font-size: 14px
font-weight: 500
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
body{background: #f0f0f0}
.con{position:relativeheight:1.875remline-height: 1.875remmargin:2.47rem autotext-align: center}
.con i{display:blockheight:1pxbackground:#e1e1e1position:absolutetop:0.9remwidth:100%}
.con p{
display:inline-block
font-size: 0.75rem
color:#c1c1c1
background:rgba(240,240,240,1)
padding:0 1.875rem
text-align: center
margin:0 auto
position:relative
z-index:2}
</style>
</head>
<body>
<div class="con">
<i></i>
<p>到底了</p>
</div>
</body>
</html>
这里使用了背景色和透明度，细心的人可能会发现，body设置的背景色刚好是‘到底了’的文字的背景色，同时也用了行内块、透明度以及相对定位来实现了的噢。
