Flexbox和SCSS

HTML

<div class="divider">divider</div>

SCSS

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: #c2c2c2;

    &::before,
    &::after {
        content: "";
        flex: 1;
        border-bottom: 1px solid #c2c2c2;
    }
    &::before {
        margin-right: 0.25em;
    }
    &::after {
        margin-left: 0.25em;
    }
}

看上面，我修改为:

CSS

.divider {
    font: 33px sans-serif;
    margin-top: 30px;
    text-align:center;
    text-transform: uppercase;
}
.divider span {
    position:relative;
}
.divider span:before, .divider span:after {
    border-top: 2px solid #000;
    content:"";
    position: absolute;
    top: 15px;
    right: 10em;
    bottom: 0;
    width: 80%;
}
.divider span:after {
    position: absolute;
    top: 15px;
    left:10em;
    right:0;
    bottom: 0;
}

HTML

<div class="divider">
    <span>This is your title</span></div>

似乎工作得很好。

我做了一个小提琴，使用FlexBox，也会给你不同风格的HR(双线，符号在线的中心，阴影，插入，虚线等)。

CSS

button {
    padding: 8px;
    border-radius: 4px;
    background-color: #fff;
    border: 1px solid #ccc;
    margin: 2px;
  }

  button:hover {
    cursor: pointer;
  }

  button.active {
    background-color: rgb(34, 179, 247);
    color: #fff;
  }

  .codeBlock {
    display: none;
  }

  .htmlCode, .cssCode {
    background-color: rgba(34, 179, 247, 0.5); 
    width: 100%;
    padding: 10px;
  }

  .divider {
    display: flex;
    flex-direction: row;
    flex-flow: row;
    width: 100%;
  }

  .divider.fixed {
    width: 400px;
  }

  .divider > label {
    align-self: baseline;
    flex-grow: 2;
    white-space: nowrap;
  }

  .divider > hr {
    margin-top: 10px;
    width: 100%;
    border: 0;
    height: 1px;
    background: #666;
  }

  .divider.left > label {
    order: 1;
    padding-right: 5px;
  }

  .divider.left > hr {
    order: 2
  }

  .divider.right > label {
    padding-left: 5px;
  }
  /* hr bars with centered text */
  /* first HR in a centered version */

  .divider.center >:first-child {
    margin-right: 5px;
  }
  /* second HR in a centered version */

  .divider.center >:last-child {
    margin-left: 5px;
  }
  /** HR style variations **/

  hr.gradient {
    background: transparent;
    background-image: linear-gradient(to right, #f00, #333, #f00);
  }

  hr.gradient2 {
    background: transparent;
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0), rgba(255, 0, 0, 0.5), rgba(0, 0, 0, 0));
  }

  hr.dashed {
    background: transparent;
    border: 0;
    border-top: 1px dashed #666;
  }

  hr.dropshadow {
    background: transparent;
    height: 12px;
    border: 0;
    box-shadow: inset 0 12px 12px -12px rgba(0, 0, 0, 0.5);
  }

  hr.blur {
    background: transparent;
    border: 0;
    height: 0;
    /* Firefox... */
    box-shadow: 0 0 10px 1px black;
  }

  hr.blur:after {
    background: transparent;
    /* Not really supposed to work, but does */
    content: "\00a0";
    /* Prevent margin collapse */
  }

  hr.inset {
    background: transparent;
    border: 0;
    height: 0;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  }

  hr.flared {
    background: transparent;
    overflow: visible;
    /* For IE */
    height: 30px;
    border-style: solid;
    border-color: black;
    border-width: 1px 0 0 0;
    border-radius: 20px;
  }

  hr.flared:before {
    background: transparent;
    display: block;
    content: "";
    height: 30px;
    margin-top: -31px;
    border-style: solid;
    border-color: black;
    border-width: 0 0 1px 0;
    border-radius: 20px;
  }

  hr.double {
    background: transparent;
    overflow: visible;
    /* For IE */
    padding: 0;
    border: none;
    border-top: medium double #333;
    color: #333;
    text-align: center;
  }

  hr.double:after {
    background: transparent;
    content: "§";
    display: inline-block;
    position: relative;
    top: -0.7em;
    font-size: 1.5em;
    padding: 0 0.25em;
  }

HTML

<div class="divider left">
  <hr />
  <label>Welcome!</label>
</div>
<p>&nbsp;</p>
<div class="divider right">
  <hr />
  <label>Welcome!</label>
</div>
<p>&nbsp;</p>
<div class="divider center">
  <hr />
  <label>Welcome!</label>
  <hr />
</div>
<p>&nbsp;</p>
<div class="divider left fixed">
  <hr />
  <label>Welcome!</label>
</div>
<p>&nbsp;</p>
<div class="divider right fixed">
  <hr />
  <label>Welcome!</label>
</div>
<p>&nbsp;</p>
<div class="divider center fixed">
  <hr />
  <label>Welcome!</label>
  <hr />
</div>

或者这里有一个交互式的Fiddle: http://jsfiddle.net/mpyszenj/439/

您可以使用CSS flex属性

HTML

<div class="hrtext">
  <div class="hrbefore">
    <hr>
  </div>
  <div class="hrcontent">
    <h2>TABLE OF CONTENT</h2>
  </div>
  <div class="hrafter">
    <hr>
  </div>
</div>

CSS

.hrtext{
    display:flex;
    align-items:center;
}
.hrbefore,.hrafter{
    flex:auto;
}
.hrcontent{
    text-align:center;
}

只使用

    hr
    {
        padding: 0;
        border: none;
        border-top: 1px solid #CCC;
        color: #333;
        text-align: center;
        font-size: 12px;
        vertical-align:middle;
    }
    hr:after
    {
        content: "Or";
        display: inline-block;
        position: relative;
        top: -0.7em;
        font-size: 1.2em;
        padding: 0 0.25em;
        background: white;
    }

更新:这将不工作使用HTML5

相反，请查看这个问题以获得更多技术:CSS挑战，我可以在不引入更多HTML的情况下做到这一点吗?

我使用line-height:0在我的网站guerilla-alumnus.com的标题中创建效果

<div class="description">
   <span>Text</span>
</div>

.description {
   border-top:1px dotted #AAAAAA;
}

.description span {
   background:white none repeat scroll 0 0;
   line-height:0;
   padding:0.1em 1.5em;
   position:relative;
}

另一个好方法是http://robots.thoughtbot.com/

他使用背景图像和浮动来达到一种很酷的效果