css - 基于内容的响应圈

Question

我有这个例子JSFIDDLE包含一个圆圈，但我无法让它根据其内容做出响应，在上面的示例中，当内容很长时，它会溢出圆圈。

.cd-single-point {
    margin:50px;
  position: absolute;
  border-radius: 50%;
}

.cd-single-point > a {
  position: relative;
  text-align:center;
  padding:2px;
  text-decoration: none;
  z-index: 2;
  display: block;
  width: 20px;
  height: 20px;
  border-radius: inherit;
  background: #d95353;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  -webkit-transition: background-color 0.2s;
  -moz-transition: background-color 0.2s;
  transition: background-color 0.2s;
}

.cd-single-point::after {
  /* this is used to create the pulse animation */
  content: '';
  position: absolute;
  z-index: 1;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  border-radius: inherit;
  background-color: transparent;
  -webkit-animation: cd-pulse 2s infinite;
  -moz-animation: cd-pulse 2s infinite;
  animation: cd-pulse 2s infinite;
}

如何仅使用 css 实现此目的？

Answer 1

您可以使用 padding technique在伪元素上保持圆的纵横比并根据其内容使其响应:

DEMO

HTML :

<div class="wrap">
    <div class="in">+46546546</div>
</div>

CSS:

.wrap{
    color: #fff;
    position:relative;
    display:inline-block;
}
.in{
    padding:60% 10%;
    margin-top:-0.6em;
}
.in:after{
    content:'';
    position:absolute;
    top:0; left:0;
    width:120%;
    padding-bottom:120%;
    background-color:#D95353;
    border-radius:50%;
    z-index:-1;
}