你用一个标准的方块，那是一个正方形

这是css3的特性，它不是很受支持，你可以依靠firefox和safari。

.circle { 宽度:10 em; 高度:10 em; -webkit-border-radius: 5 em; -moz-border-radius: 5 em; 边框:1px纯黑色; ｝ < div class = "圆" > < span > 1234 < / span > < / div >

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>

你用一个标准的方块，那是一个正方形

这是css3的特性，它不是很受支持，你可以依靠firefox和safari。

.circle { 宽度:10 em; 高度:10 em; -webkit-border-radius: 5 em; -moz-border-radius: 5 em; 边框:1px纯黑色; ｝ < div class = "圆" > < span > 1234 < / span > < / div >

下面是JSFiddle的演示和代码片段:

/* Creating a number within a circle using CSS */ .numberCircle { font-family: "OpenSans-Semibold", Arial, "Helvetica Neue", Helvetica, sans-serif; display: inline-block; color: #fff; text-align: center; line-height: 0px; border-radius: 50%; font-size: 12px; min-width: 38px; min-height: 38px; } .numberCircle span { display: inline-block; padding-top: 50%; padding-bottom: 50%; margin-left: 1px; margin-right: 1px; } /* Some Back Ground Colors */ .clrGreen { background: #51a529; } .clrRose { background: #e6568b; } .clrOrange { background: #ec8234; } .clrBlueciel { background: #21adfc; } .clrMauve { background: #7b5d99; } <span class="numberCircle clrGreen"><span>8</span></span> <span class="numberCircle clrRose"><span>80</span></span> <span class="numberCircle clrOrange"><span>800</span></span> <span class="numberCircle clrMauve"><span>8000</span></span>

The problem with most of the other answers here is you need to tweak the size of the outer container so that it is the perfect size based on the font size and number of characters to be displayed. If you are mixing 1 digit numbers and 4 digit numbers, it won't work. If the ratio between the font size and the circle size isn't perfect, you'll either end up with an oval or a small number vertically aligned at the top of a large circle. This should work fine for any amount of text and any size circle. Just set the width and line-height to the same value:

.numberCircle { 宽度:120 px; 行高:120 px; 这个特性:50%; text-align:中心; 字体大小:32像素; 边框:2px实体#666; ｝ < div class = " numberCircle " > < / div > 1 < div class = " numberCircle”> 100 < / div > < div class = " numberCircle”> 10000 < / div > < div class = " numberCircle”> 1000000 < / div >

如果您需要使内容更长或更短，您所需要做的就是调整容器的宽度以更好地适应。

在JSFiddle上可以看到。

虽然迟到了，但下面是我用https://codepen.io/jnbruno/pen/vNpPpW给出的解决方案

不需要额外的工作。 谢谢约翰·诺埃尔·布鲁诺

.btn-circle.btn-xl { width: 70px; height: 70px; padding: 10px 16px; border-radius: 35px; font-size: 24px; line-height: 1.33; } .btn-circle { width: 30px; height: 30px; padding: 6px 0px; border-radius: 15px; text-align: center; font-size: 12px; line-height: 1.42857; } <div class="panel-body"> <h4>Normal Circle Buttons</h4> <button type="button" class="btn btn-default btn-circle"> <i class="fa fa-check"></i> </button> <button type="button" class="btn btn-primary btn-circle"> <i class="fa fa-list"></i> </button> </div>