css make responsive oval block

问题

I am trying to make a css blocks for numbers shown in image below. My idea / goal is to make one responsive block so if there will be one number it will be round, if two then like second. I have been tried to make border-radius: 50% so the first block I succeed to do second was not like in image with border-radius: 50%

So my question is it possible to make such result with one class block or for each button (left | right) I need to write special class for each block ?

回答1:

Fixed Height Solution

For this you will need a "fixed" height (otherwise, you'll need to calculate this with jquery).

What you'll need to do is something like this;

html,body{background:#222;}
div {
  margin:10px;
  display: inline-block;
  height: 30px;
  border-radius: 25px;
  background: lightblue;
  font-size: 30px;
  min-width: 30px;
  text-align: center;
  line-height: 30px;
  padding: 10px;
  position:relative;
  color:blue;
}
div:before{
  content:"";
  position:absolute;
  left:0;
  top:-10px;
  width:100%;
  border-top:3px solid tomato;
  }

<div>1</div>
<div>123</div>

Note: The border-radius should be set to half the overall height for this.

I've also included a min-width to ensure it is always at least a circle.

---

JQuery Solution For non-fixed heights

$(document).ready(function() {
  $('div').each(function(index) {
    var height = $(this).height();
    $(this).css("border-radius", height + "px");
  });
});

html,
body {
  background: #222;
}
div {
  margin: 10px;
  display: inline-block;
  border-radius: 25px;
  background: lightblue;
  font-size: 30px;
  min-width: 30px;
  text-align: center;
  line-height: 30px;
  padding: 10px;
  position: relative;
  vertical-align:top;
  color: blue;
}
div:before {
  content: "";
  position: absolute;
  left: 0;
  top: -10px;
  width: 100%;
  border-top: 3px solid tomato;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>1</div>
<div>123</div>

<div>Not a set height,
  <br/>either :)</div>

回答2:

For ellipse use 100%:

border-radius: 100%;

For stadium use big value in px:

border-radius: 9999px;

Example

.round{
  display: inline-block;
  width:50px;
  height:50px;
  background: red;
  border-radius: 100%;
  margin: 10px;
}

.ellipse,.stadium{
  width: 80px;
}

.stadium{
  border-radius: 9999px;
}

<div class="round circle"></div>
<div class="round ellipse"></div>
<div class="round stadium"></div>

回答3:

div{
	height:50px;
	width:50px;
	border-radius:9999px;
	background:red;
	text-align:center;
	display:inline-block;
	line-height:3em;
	font-weight:bold;
	font-size:16px;
		}

<div>2</div>
 <div>28</div>

来源：https://stackoverflow.com/questions/29048234/css-make-responsive-oval-block