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仅CSS的饼图百分比

发布于 2025-02-02 19:47:02 字数 340 浏览 3 评论 0 原文

我发现“百分比饼图”非常不错，只想使用CSS创建它。无需动画。只是静态的“图片”。

“示例1”

我明白如果我想创建此类图表，我需要使用

“示例2”

问题是

  1. 如何创建元素＃2？
  2. 如何管理较小（5％）或更高百分比（80％）值的元素2的形状？
原文

I've found pretty nice "percent pie chart" and want to create it with CSS only. No animation is required. Just static "picture".

Example 1

I understand If I wanna create this kind of chart I need to use elements like these

Example 2

The questions are

  1. How to create element #2 ?
  2. How to manage shape of element #2 for smaller (5%) or higher percent (80%) values ?

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评论（3）

谢绝鈎搭 2025-02-09 19:47:03

嘿，您可以添加小型CSS样式

.circle {
  position: relative;
  top: 5px;
  left: 5px;
  text-align: center;
  width: 100px;
  height: 100px;
  border-radius: 100%;
  background-color: #ffffff;
}

.circle-border {
  position: relative;
  text-align: center;
  width: 110px;
  height: 110px;
  margin-left: 30%;
  border-radius: 100%;
  background-color: #E53B3B;
  background: linear-gradient(0deg, lightgray 100%, black 0%)
}

html

<div class="circle-border" id="circleElement">
  <div class="circle" id="circleElementValue">
    aaa
  </div>
</div>

js：自动显示填充的百分比，

// let i = 75;
//   let deg=Math.round(1.8*i); 
//   let completed=0;
//   let remaining=100-i;
//   // completed = (remaining>50)? 50 : completed;
// let backgroundStlye = 'linear-gradient('+deg+'deg, lightgray '+remaining +'%, black '+completed + '%)';
//   setTimeout(function(){
//     console.log(backgroundStlye);
//   document.getElementById("circleElement").style.background =backgroundStlye;
// },i*100);

for(let i=1;i<=100;i++){
  let deg=Math.round(1.8*i); 
  let completed=i;
  let remaining=100-i;
  completed = (remaining<50)? 0 : completed;
let backgroundStlye = 'linear-gradient('+deg+'deg, lightgray '+remaining +'%, black '+completed + '%)';
  setTimeout(function(){
    console.log(backgroundStlye);
  document.getElementById("circleElement").style.background =backgroundStlye;
    document.getElementById("circleElementValue").innerHTML = i+'%';
},i*100);
}

我创建了示例

希望您喜欢Yyyyyyyyyyy

Hey gus you can add small CSS styles

.circle {
  position: relative;
  top: 5px;
  left: 5px;
  text-align: center;
  width: 100px;
  height: 100px;
  border-radius: 100%;
  background-color: #ffffff;
}

.circle-border {
  position: relative;
  text-align: center;
  width: 110px;
  height: 110px;
  margin-left: 30%;
  border-radius: 100%;
  background-color: #E53B3B;
  background: linear-gradient(0deg, lightgray 100%, black 0%)
}

HTML

<div class="circle-border" id="circleElement">
  <div class="circle" id="circleElementValue">
    aaa
  </div>
</div>

JS : display the % of filling automatically

// let i = 75;
//   let deg=Math.round(1.8*i); 
//   let completed=0;
//   let remaining=100-i;
//   // completed = (remaining>50)? 50 : completed;
// let backgroundStlye = 'linear-gradient('+deg+'deg, lightgray '+remaining +'%, black '+completed + '%)';
//   setTimeout(function(){
//     console.log(backgroundStlye);
//   document.getElementById("circleElement").style.background =backgroundStlye;
// },i*100);

for(let i=1;i<=100;i++){
  let deg=Math.round(1.8*i); 
  let completed=i;
  let remaining=100-i;
  completed = (remaining<50)? 0 : completed;
let backgroundStlye = 'linear-gradient('+deg+'deg, lightgray '+remaining +'%, black '+completed + '%)';
  setTimeout(function(){
    console.log(backgroundStlye);
  document.getElementById("circleElement").style.background =backgroundStlye;
    document.getElementById("circleElementValue").innerHTML = i+'%';
},i*100);
}

I created sample https://codepen.io/arun-b-shet/pen/mdVVWXo

HOPE you enjoyyyyyyyyyyyy

回复 原文
時窥 2025-02-09 19:47:02

借助现代技术，我们可以改进代码。您可以拥有圆形的边缘并考虑动画：

@property --p{
  syntax: '<number>';
  inherits: true;
  initial-value: 1;
}

.pie {
  --p:20;      /* the percentage */
  --b:22px;    /* the thickness */
  --c:darkred; /* the color */
  --w:150px;   /* the size*/
  
  width:var(--w);
  aspect-ratio:1/1;
  position:relative;
  display:inline-grid;
  margin:5px;
  place-content:center;
  font-size:25px;
  font-weight:bold;
  font-family:sans-serif;
}
.pie:before,
.pie:after {
  content:"";
  position:absolute;
  border-radius:50%;
}
.pie:before {
  inset:0;
  background:
    radial-gradient(farthest-side,var(--c) 98%,#0000) top/var(--b) var(--b) no-repeat,
    conic-gradient(var(--c) calc(var(--p)*1%),#0000 0);
  -webkit-mask:radial-gradient(farthest-side,#0000 calc(99% - var(--b)),#000 calc(100% - var(--b)));
          mask:radial-gradient(farthest-side,#0000 calc(99% - var(--b)),#000 calc(100% - var(--b)));
}
.pie:after {
  inset:calc(50% - var(--b)/2);
  background:var(--c);
  transform:rotate(calc(var(--p)*3.6deg - 90deg)) translate(calc(var(--w)/2 - 50%));
}
.animate {
  animation:p 1s .5s both;
}
.no-round:before {
  background-size:0 0,auto;
}
.no-round:after {
  content:none;
}
@keyframes p{
  from{--p:0;}
}

body {
  background:#ddd;
}
<div class="pie" style="--p:20"> 20%</div>
<div class="pie" style="--p:40;--c:darkblue;--b:10px"> 40%</div>
<div class="pie no-round" style="--p:60;--c:purple;--b:15px"> 60%</div>
<div class="pie animate" style="--p:80;--c:orange;"> 80%</div>
<div class="pie animate no-round" style="--p:90;--c:lightgreen"> 90%</div>

以及带有渐变色的版本，您也可以在我的网站上找到： https：https：https：https：https：https：https：https： //css-shape.com/arc/ 

@property --p{
  syntax: '<number>';
  inherits: true;
  initial-value: 1;
}

.pie {
  --p:20;      /* the percentage */
  --b:22px;    /* the thickness */
  --c:linear-gradient(darkred,blue); /* the color */
  --w:150px;   /* the size*/
  
  width: var(--w);
  aspect-ratio: 1;
  position: relative;
  display: inline-grid;
  margin: 5px;
  place-content:center;
  font-size:25px;
  font-weight:bold;
  font-family:sans-serif;
}

.pie:before {
  content:"";
  position: absolute;
  inset:0;
  background:red;
  padding: var(--b); 
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--c);
  mask:
    linear-gradient(#0000 0 0) content-box intersect,
    conic-gradient(#000 calc(var(--p)*1%),#0000 0);
}

.animate {
  animation:p 1s .5s both;
}
.no-round:before {
  background-size:0 0,auto;
}
.no-round:after {
  content:none;
}
@keyframes p{
  from{--p:0;}
}

body {
  background:#eee;
}
<div class="pie" style="--p:20"> 20%</div>
<div class="pie" style="--p:40;--c:linear-gradient(45deg,red,yellow);--b:10px"> 40%</div>
<div class="pie" style="--p:60;--c:purple;--b:15px"> 60%</div>
<div class="pie animate" style="--p:80;--c:linear-gradient(45deg,orange,pink);"> 80%</div>
<div class="pie animate" style="--p:90;--c:conic-gradient(lightgreen,green)"> 90%</div>

旧答案

您可以在多个背景下完成此操作。

从 0％到 50％：

.box {
  width: 100px;
  height: 100px;
  display: inline-block;
  border-radius: 50%;
  padding: 5px;
  background: 
    linear-gradient(#ccc, #ccc) content-box, 
    linear-gradient(var(--v), #f2f2f2 50%, transparent 0),
    linear-gradient(to right, #f2f2f2 50%, blue 0);
}
<div class="box" style="--v:-90deg"></div><!-- 0% -->
<div class="box" style="--v:-45deg"></div><!-- 12.5% -->
<div class="box" style="--v:  0deg"></div><!-- 25% -->
<div class="box" style="--v: 45deg"></div><!-- 37.5% -->
<div class="box" style="--v: 90deg"></div><!-- 50% -->

<p>The formula is [p = (18/5) * x - 90]. <small>Where x is the percentage and p the degree</small></p>
<p>for x = 5% --> p = -72deg </p>
<div class="box" style="--v:-72deg"></div>

从 50％到 100％：

.box {
  width:100px;
  height:100px;
  display:inline-block;
  border-radius:50%;
  padding:5px;
  background:
    linear-gradient(#ccc,#ccc) content-box,
    linear-gradient(var(--v), blue 50%,transparent 0),
    linear-gradient(to right, #f2f2f2 50%,blue 0);
}
<div class="box" style="--v:-90deg"></div><!-- 50% -->
<div class="box" style="--v:-45deg"></div><!-- 62.5% -->
<div class="box" style="--v:  0deg"></div><!-- 75% -->
<div class="box" style="--v: 45deg"></div><!-- 87.5% -->
<div class="box" style="--v: 90deg"></div><!-- 100% -->

<p>The formula is [p = (18/5) * x - 270]. <small>Where x is the percentage and p the degree</small></p>
<p>for x = 80% --> p = 18deg </p>
<div class="box" style="--v:18deg"></div>

您可以将两者结合起来：

.box {
  width:100px;
  height:100px;
  display:inline-block;
  border-radius:50%;
  padding:5px;
  background:
    linear-gradient(#ccc,#ccc) content-box,
    linear-gradient(var(--v), #f2f2f2 50%,transparent 0) 0/calc(var(--s)*100%)      ,
    linear-gradient(var(--v), blue    50%,transparent 0) 0/calc((1 - var(--s))*100%),
    linear-gradient(to right, #f2f2f2 50%,blue 0);
}
<div class="box" style="--v:-90deg;--s:1"></div>
<div class="box" style="--v:0deg;--s:1"></div>
<div class="box" style="--v:90deg;--s:1"></div>
<div class="box" style="--v:0deg;--s:0"></div>
<div class="box" style="--v:90deg;--s:0"></div>

现在，我们可以像以下那样优化以考虑percetange值：

.box {
  
  --v:calc( ((18/5) * var(--p) - 90)*1deg);

  width:100px;
  height:100px;
  display:inline-block;
  border-radius:50%;
  padding:10px;
  background:
    linear-gradient(#ccc,#ccc) content-box,
    linear-gradient(var(--v), #f2f2f2     50%,transparent 0) 0/min(100%,(50 - var(--p))*100%),
    linear-gradient(var(--v), transparent 50%,blue        0) 0/min(100%,(var(--p) - 50)*100%),
    linear-gradient(to right, #f2f2f2 50%,blue 0);
}
<div class="box" style="--p:5;"></div>
<div class="box" style="--p:20;"></div>
<div class="box" style="--p:50;"></div>
<div class="box" style="--p:60;"></div>
<div class="box" style="--p:75;"></div>
<div class="box" style="--p:100;"></div>

相关的问题要获得另一个版本：使用CSS创建静态饼图

我们也可以考虑<代码>掩码添加透明度：

.box {
  
  --v:calc( ((18/5) * var(--p) - 90)*1deg);

  width:100px;
  height:100px;
  display:inline-block;
  border-radius:50%;
  padding:10px;
  background:
    linear-gradient(var(--v), #f2f2f2     50%,transparent 0) 0/min(100%,(50 - var(--p))*100%),
    linear-gradient(var(--v), transparent 50%,blue        0) 0/min(100%,(var(--p) - 50)*100%),
    linear-gradient(to right, #f2f2f2 50%,blue 0);
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite:destination-out;
  mask-composite:exclude;
}

body {
  background:linear-gradient(to right,red,yellow);
}
<div class="box" style="--p:5;"></div>
<div class="box" style="--p:20;"></div>
<div class="box" style="--p:50;"></div>
<div class="box" style="--p:60;"></div>
<div class="box" style="--p:75;"></div>
<div class="box" style="--p:100;"></div>

也喜欢以下：

.box {
  
  --v:calc( ((18/5) * var(--p) - 90)*1deg);

  width:100px;
  height:100px;
  display:inline-block;
  border-radius:50%;
  padding:10px;
  background:
    linear-gradient(var(--v), transparent 50%,blue        0) 0/min(100%,(var(--p) - 50)*100%),
    linear-gradient(to right, transparent 50%,blue 0);
  -webkit-mask:
    linear-gradient(var(--v), #f2f2f2     50%,transparent 0) 0/min(100%,(50 - var(--p))*100%),
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite:destination-out;
  mask-composite:exclude;
}

body {
  background:linear-gradient(to right,red,yellow);
}
<div class="box" style="--p:5;"></div>
<div class="box" style="--p:20;"></div>
<div class="box" style="--p:50;"></div>
<div class="box" style="--p:60;"></div>
<div class="box" style="--p:75;"></div>
<div class="box" style="--p:100;"></div>

相关：带边框半径的边界梯度

With modern techniques we can improve the code. You can have rounded edges and also consider animation:

@property --p{
  syntax: '<number>';
  inherits: true;
  initial-value: 1;
}

.pie {
  --p:20;      /* the percentage */
  --b:22px;    /* the thickness */
  --c:darkred; /* the color */
  --w:150px;   /* the size*/
  
  width:var(--w);
  aspect-ratio:1/1;
  position:relative;
  display:inline-grid;
  margin:5px;
  place-content:center;
  font-size:25px;
  font-weight:bold;
  font-family:sans-serif;
}
.pie:before,
.pie:after {
  content:"";
  position:absolute;
  border-radius:50%;
}
.pie:before {
  inset:0;
  background:
    radial-gradient(farthest-side,var(--c) 98%,#0000) top/var(--b) var(--b) no-repeat,
    conic-gradient(var(--c) calc(var(--p)*1%),#0000 0);
  -webkit-mask:radial-gradient(farthest-side,#0000 calc(99% - var(--b)),#000 calc(100% - var(--b)));
          mask:radial-gradient(farthest-side,#0000 calc(99% - var(--b)),#000 calc(100% - var(--b)));
}
.pie:after {
  inset:calc(50% - var(--b)/2);
  background:var(--c);
  transform:rotate(calc(var(--p)*3.6deg - 90deg)) translate(calc(var(--w)/2 - 50%));
}
.animate {
  animation:p 1s .5s both;
}
.no-round:before {
  background-size:0 0,auto;
}
.no-round:after {
  content:none;
}
@keyframes p{
  from{--p:0;}
}

body {
  background:#ddd;
}
<div class="pie" style="--p:20"> 20%</div>
<div class="pie" style="--p:40;--c:darkblue;--b:10px"> 40%</div>
<div class="pie no-round" style="--p:60;--c:purple;--b:15px"> 60%</div>
<div class="pie animate" style="--p:80;--c:orange;"> 80%</div>
<div class="pie animate no-round" style="--p:90;--c:lightgreen"> 90%</div>

CSS only pie chart

And a version with gradient coloration that you can also find on my website: https://css-shape.com/arc/

@property --p{
  syntax: '<number>';
  inherits: true;
  initial-value: 1;
}

.pie {
  --p:20;      /* the percentage */
  --b:22px;    /* the thickness */
  --c:linear-gradient(darkred,blue); /* the color */
  --w:150px;   /* the size*/
  
  width: var(--w);
  aspect-ratio: 1;
  position: relative;
  display: inline-grid;
  margin: 5px;
  place-content:center;
  font-size:25px;
  font-weight:bold;
  font-family:sans-serif;
}

.pie:before {
  content:"";
  position: absolute;
  inset:0;
  background:red;
  padding: var(--b); 
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--c);
  mask:
    linear-gradient(#0000 0 0) content-box intersect,
    conic-gradient(#000 calc(var(--p)*1%),#0000 0);
}

.animate {
  animation:p 1s .5s both;
}
.no-round:before {
  background-size:0 0,auto;
}
.no-round:after {
  content:none;
}
@keyframes p{
  from{--p:0;}
}

body {
  background:#eee;
}
<div class="pie" style="--p:20"> 20%</div>
<div class="pie" style="--p:40;--c:linear-gradient(45deg,red,yellow);--b:10px"> 40%</div>
<div class="pie" style="--p:60;--c:purple;--b:15px"> 60%</div>
<div class="pie animate" style="--p:80;--c:linear-gradient(45deg,orange,pink);"> 80%</div>
<div class="pie animate" style="--p:90;--c:conic-gradient(lightgreen,green)"> 90%</div>

CSS only pie chart with gradients

Old answer

You can do this with multiple background.

From 0% to 50%:

.box {
  width: 100px;
  height: 100px;
  display: inline-block;
  border-radius: 50%;
  padding: 5px;
  background: 
    linear-gradient(#ccc, #ccc) content-box, 
    linear-gradient(var(--v), #f2f2f2 50%, transparent 0),
    linear-gradient(to right, #f2f2f2 50%, blue 0);
}
<div class="box" style="--v:-90deg"></div><!-- 0% -->
<div class="box" style="--v:-45deg"></div><!-- 12.5% -->
<div class="box" style="--v:  0deg"></div><!-- 25% -->
<div class="box" style="--v: 45deg"></div><!-- 37.5% -->
<div class="box" style="--v: 90deg"></div><!-- 50% -->

<p>The formula is [p = (18/5) * x - 90]. <small>Where x is the percentage and p the degree</small></p>
<p>for x = 5% --> p = -72deg </p>
<div class="box" style="--v:-72deg"></div>

From 50% to 100%:

.box {
  width:100px;
  height:100px;
  display:inline-block;
  border-radius:50%;
  padding:5px;
  background:
    linear-gradient(#ccc,#ccc) content-box,
    linear-gradient(var(--v), blue 50%,transparent 0),
    linear-gradient(to right, #f2f2f2 50%,blue 0);
}
<div class="box" style="--v:-90deg"></div><!-- 50% -->
<div class="box" style="--v:-45deg"></div><!-- 62.5% -->
<div class="box" style="--v:  0deg"></div><!-- 75% -->
<div class="box" style="--v: 45deg"></div><!-- 87.5% -->
<div class="box" style="--v: 90deg"></div><!-- 100% -->

<p>The formula is [p = (18/5) * x - 270]. <small>Where x is the percentage and p the degree</small></p>
<p>for x = 80% --> p = 18deg </p>
<div class="box" style="--v:18deg"></div>

You can combine both like this:

.box {
  width:100px;
  height:100px;
  display:inline-block;
  border-radius:50%;
  padding:5px;
  background:
    linear-gradient(#ccc,#ccc) content-box,
    linear-gradient(var(--v), #f2f2f2 50%,transparent 0) 0/calc(var(--s)*100%)      ,
    linear-gradient(var(--v), blue    50%,transparent 0) 0/calc((1 - var(--s))*100%),
    linear-gradient(to right, #f2f2f2 50%,blue 0);
}
<div class="box" style="--v:-90deg;--s:1"></div>
<div class="box" style="--v:0deg;--s:1"></div>
<div class="box" style="--v:90deg;--s:1"></div>
<div class="box" style="--v:0deg;--s:0"></div>
<div class="box" style="--v:90deg;--s:0"></div>

Now we can optimize like below to consider percetange value:

.box {
  
  --v:calc( ((18/5) * var(--p) - 90)*1deg);

  width:100px;
  height:100px;
  display:inline-block;
  border-radius:50%;
  padding:10px;
  background:
    linear-gradient(#ccc,#ccc) content-box,
    linear-gradient(var(--v), #f2f2f2     50%,transparent 0) 0/min(100%,(50 - var(--p))*100%),
    linear-gradient(var(--v), transparent 50%,blue        0) 0/min(100%,(var(--p) - 50)*100%),
    linear-gradient(to right, #f2f2f2 50%,blue 0);
}
<div class="box" style="--p:5;"></div>
<div class="box" style="--p:20;"></div>
<div class="box" style="--p:50;"></div>
<div class="box" style="--p:60;"></div>
<div class="box" style="--p:75;"></div>
<div class="box" style="--p:100;"></div>

CSS pie chart

Related question to get another version: Creating a static pie chart with CSS

We can also consider mask to add transparency:

.box {
  
  --v:calc( ((18/5) * var(--p) - 90)*1deg);

  width:100px;
  height:100px;
  display:inline-block;
  border-radius:50%;
  padding:10px;
  background:
    linear-gradient(var(--v), #f2f2f2     50%,transparent 0) 0/min(100%,(50 - var(--p))*100%),
    linear-gradient(var(--v), transparent 50%,blue        0) 0/min(100%,(var(--p) - 50)*100%),
    linear-gradient(to right, #f2f2f2 50%,blue 0);
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite:destination-out;
  mask-composite:exclude;
}

body {
  background:linear-gradient(to right,red,yellow);
}
<div class="box" style="--p:5;"></div>
<div class="box" style="--p:20;"></div>
<div class="box" style="--p:50;"></div>
<div class="box" style="--p:60;"></div>
<div class="box" style="--p:75;"></div>
<div class="box" style="--p:100;"></div>

CSS pie chart with transparency

Also like below:

.box {
  
  --v:calc( ((18/5) * var(--p) - 90)*1deg);

  width:100px;
  height:100px;
  display:inline-block;
  border-radius:50%;
  padding:10px;
  background:
    linear-gradient(var(--v), transparent 50%,blue        0) 0/min(100%,(var(--p) - 50)*100%),
    linear-gradient(to right, transparent 50%,blue 0);
  -webkit-mask:
    linear-gradient(var(--v), #f2f2f2     50%,transparent 0) 0/min(100%,(50 - var(--p))*100%),
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite:destination-out;
  mask-composite:exclude;
}

body {
  background:linear-gradient(to right,red,yellow);
}
<div class="box" style="--p:5;"></div>
<div class="box" style="--p:20;"></div>
<div class="box" style="--p:50;"></div>
<div class="box" style="--p:60;"></div>
<div class="box" style="--p:75;"></div>
<div class="box" style="--p:100;"></div>

transparent pie chart using CSS mask

Related: Border Gradient with Border Radius

回复 原文
故人如初 2025-02-09 19:47:02

使用新的 圆锥梯度 ，这可以用单个DIV来管理，该DIV刚刚降落在Chrome中作为实验属性。

结果的图像

”在此处输入图像描述 

:root {
  --size: 100px;
  --bord: 10px;
}

.chart {
  width: var(--size);
  height: var(--size);
  margin: 1em auto;
  border-radius: 50%;
  background-image: conic-gradient(lightseagreen var(--value), lightgrey var(--value));
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.chart::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: calc(100% - var(--bord));
  height: calc(100% - var(--bord));
  background: white;
  border-radius: inherit;
}

p {
  position: relative;
  z-index: 1;
  font-size: 2em;
}

.x-60 {
  --value: 60%;
}

.x-20 {
  --value: 20%;
}
<div class="chart x-60">
  <p>60%</p>
</div>

<div class="chart x-20">
  <p>20%</p>
</div>

感谢Temani Afif，可以使用边框和利用 background-clip ...

 background: 
    linear-gradient(white,white) padding-box,
    conic-gradient(lightseagreen var(--value), lightgrey var(--value)) border-box;


:root {
  --size: 100px;
  --bord: 10px;
}

.chart {
  width: var(--size);
  height: var(--size);
  margin: 1em auto;
  border: var(--bord) solid transparent;
  border-radius: 50%;
  background: linear-gradient(white, white) padding-box, conic-gradient(lightseagreen var(--value), lightgrey var(--value)) border-box;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2em;
}

.x-60 {
  --value: 60%;
}

.x-20 {
  --value: 20%;
}
<div class="chart x-60">
  <p>60%</p>
</div>

<div class="chart x-20">
  <p>20%</p>
</div>

Using the new conic gradient, this can be managed with a single div which just landed in Chrome as an experimental property.

Image of Result

enter image description here

:root {
  --size: 100px;
  --bord: 10px;
}

.chart {
  width: var(--size);
  height: var(--size);
  margin: 1em auto;
  border-radius: 50%;
  background-image: conic-gradient(lightseagreen var(--value), lightgrey var(--value));
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.chart::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: calc(100% - var(--bord));
  height: calc(100% - var(--bord));
  background: white;
  border-radius: inherit;
}

p {
  position: relative;
  z-index: 1;
  font-size: 2em;
}

.x-60 {
  --value: 60%;
}

.x-20 {
  --value: 20%;
}
<div class="chart x-60">
  <p>60%</p>
</div>

<div class="chart x-20">
  <p>20%</p>
</div>

With thanks for Temani Afif it's possible to achieve this without the pseudo element using a border and leveraging background-clip...

 background: 
    linear-gradient(white,white) padding-box,
    conic-gradient(lightseagreen var(--value), lightgrey var(--value)) border-box;


:root {
  --size: 100px;
  --bord: 10px;
}

.chart {
  width: var(--size);
  height: var(--size);
  margin: 1em auto;
  border: var(--bord) solid transparent;
  border-radius: 50%;
  background: linear-gradient(white, white) padding-box, conic-gradient(lightseagreen var(--value), lightgrey var(--value)) border-box;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2em;
}

.x-60 {
  --value: 60%;
}

.x-20 {
  --value: 20%;
}
<div class="chart x-60">
  <p>60%</p>
</div>

<div class="chart x-20">
  <p>20%</p>
</div>

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