我想把一个数字围成一个圆,就像下图所示:

这可能吗?它是如何实现的?


当前回答

改进第一个答案,只需去除填充,并添加line-height和vertical-align:

.numberCircle {
   border-radius: 50%;       

   width: 36px;
   height: 36px;
   line-height: 36px;
   vertical-align:middle;

   background: #fff;
   border: 2px solid #666;
   color: #666;

   text-align: center;
   font: 32px Arial, sans-serif;
}

其他回答

对于根据内容变化的圆圈大小,这应该是有效的:

.numberCircle { display: inline-block; line-height: 0px; border-radius: 50%; border: 2px solid; font-size: 32px; } .numberCircle span { display: inline-block; padding-top: 50%; padding-bottom: 50%; margin-left: 8px; margin-right: 8px; } <span class="numberCircle"><span>30</span></span> <span class="numberCircle"><span>1</span></span> <span class="numberCircle"><span>5435</span></span> <span class="numberCircle"><span>2</span></span> <span class="numberCircle"><span>100</span></span>

它依赖于内容的宽度加上margin- s来确定半径,然后使用padding- s扩展高度以匹配。margin-'s需要根据字体大小进行调整。

更新以删除内部元素:

.numberCircle { display: inline-block; border-radius: 50%; border: 2px solid; font-size: 32px; } .numberCircle:before, .numberCircle:after { content: '\200B'; display: inline-block; line-height: 0px; padding-top: 50%; padding-bottom: 50%; } .numberCircle:before { padding-left: 8px; } .numberCircle:after { padding-right: 8px; } <span class="numberCircle">30</span> <span class="numberCircle">1</span> <span class="numberCircle">5435</span> <span class="numberCircle">2</span> <span class="numberCircle">100</span>

使用伪元素强制高度。垂直对齐需要零宽度空间。将line-height:0px从外层移到伪层,这样在IE8降级时至少是可见的。

你可以使用

span.red { background: red; border-radius: 0.8em; -moz-border-radius: 0.8em; -webkit-border-radius: 0.8em; color: #ffffff; display: inline-block; font-weight: bold; line-height: 1.6em; margin-right: 15px; text-align: center; width: 1.6em; } span.grey { background: #cccccc; border-radius: 0.8em; -moz-border-radius: 0.8em; -webkit-border-radius: 0.8em; color: #fff; display: inline-block; font-weight: bold; line-height: 1.6em; margin-right: 15px; text-align: center; width: 1.6em; } span.green { background: #5EA226; border-radius: 0.8em; -moz-border-radius: 0.8em; -webkit-border-radius: 0.8em; color: #ffffff; display: inline-block; font-weight: bold; line-height: 1.6em; margin-right: 15px; text-align: center; width: 1.6em; } span.blue { background: #5178D0; border-radius: 0.8em; -moz-border-radius: 0.8em; -webkit-border-radius: 0.8em; color: #ffffff; display: inline-block; font-weight: bold; line-height: 1.6em; margin-right: 15px; text-align: center; width: 1.6em; } span.pink { background: #EF0BD8; border-radius: 0.8em; -moz-border-radius: 0.8em; -webkit-border-radius: 0.8em; color: #ffffff; display: inline-block; font-weight: bold; line-height: 1.6em; margin-right: 15px; text-align: center; width: 1.6em; } <h1><span class="grey">1</span>A grey circle with number inside</h1> <h1><span class="red">2</span>A red circle with number inside</h1> <h1><span class="blue">3</span>A blue circle with number inside</h1> <h1><span class="green">4</span>A green circle with number inside</h1> <h1><span class="pink">5</span>A pink circle with number inside</h1>

感谢https://wpsites.net/web-design/colored-numbered-circles-using-pure-css-html/

你可以使用border-radius:

<html>
  <head>
    <style type="text/css">

    .round
    {
        -moz-border-radius: 15px;
        border-radius: 15px;
        padding: 5px;
        border: 1px solid #000;
    }

  </style>
  </head>  
  <body>   
    <span class="round">30</span>
  </body>
</html>  

调整边界半径和填充值,直到你对结果满意为止。

但这并不适用于所有浏览器。我猜IE仍然不支持圆角。

这是我的方法,用平方法。优点是它适用于不同的值,但你需要两个跨度。

.circle { display: inline-block; border: 1px solid black; border-radius: 50%; position: relative; padding: 5px; } .circle::after { content: ''; display: block; padding-bottom: 100%; height: 0; opacity: 0; } .num { position: absolute; top: 50%; transform: translateY(-50%); } .width_holder { display: block; height: 0; overflow: hidden; } <div class="circle"> <span class="width_holder">1</span> <span class="num">1</span> </div> <div class="circle"> <span class="width_holder">11</span> <span class="num">11</span> </div> <div class="circle"> <span class="width_holder">11111</span> <span class="num">11111</span> </div> <div class="circle"> <span class="width_holder">11111111</span> <span class="num">11111111</span> </div>

.numberCircle { 这个特性:50%; 宽度:40像素; 高度:40像素; 显示:块; 浮:左; 边框:2px实体#000000; 颜色:# 000000; text-align:中心; margin-right: 5 px; } <h3><span class="numberCircle">1</span> Regiones del Interior</h3>