不使用固定宽度和高度的CSS圈

问题描述

我想在圆圈内显示通知数量，但我不希望它具有固定的宽度，因此圆圈可以在圆圈内有更大的数字/文本时展开。

   
 
    =jsdata-hide =falsedata-console =truedata-babel =false> 
 
  .circle {display：inline-block;边界半径：50％; min-width：20px; min-height：20px;填充：5px;背景：红色;白颜色; text-align：center; line-height：1;方块大小：内容框; white-space：nowrap;}。circle：before {content：;显示：inline-block; vertical-align：middle;填充顶部：100％; height：0;}。circle span {display：inline-block; vertical-align：middle;}  
 < div class = circle>< span> 8< / span>< / div>< div class =circle>< span> 64< / span>< < span> 512< / span>< / div>< div class =circle>< span> 4096< / span>< / div> pre> 
 
 
I want to display the notification count inside a circle but I don't want it to have a fixed width so the circle can expand when there is a bigger number/text inside the circle.
.circle {
  height: 20px;
  width: 20px;
  line-height: 20px;
  border-radius: 50%;
  background-color: red;
  color: white;
  text-align: center;
}
<div class="circle">5</div>
<br>
<div class="circle">102</div>
 解决方案 
See this CSS only solution. Set the same value of min-width and min-height for 1 digit number. Use a pseudo element for vertical alignment and to maintain the square shape. With border-radius applies to the container for the circle.
.circle {
  display: inline-block;
  border-radius: 50%;
  min-width: 20px;
  min-height: 20px;
  padding: 5px;
  background: red;
  color: white;
  text-align: center;
  line-height: 1;
  box-sizing: content-box;
  white-space: nowrap;
}
.circle:before {
  content: "";
  display: inline-block;
  vertical-align: middle;
  padding-top: 100%;
  height: 0;
}
.circle span {
  display: inline-block;
  vertical-align: middle;
}
<div class="circle"><span>8</span></div>
<div class="circle"><span>64</span></div>
<div class="circle"><span>512</span></div>
<div class="circle"><span>4096</span></div>
                        
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