注：1/4圆，1/2圆(半圆)、3/4圆(270度)的实现都使用到了clip属性，且属性的值必为自身宽度的一半。

效果

• 1/4圆、1/2圆

  
  
  image.png

270度圆

image.png

进度圆/进度条

image.png

全部代码如下

<template>
  <div class="container-box">
    <!-- 1/4圆 、半圆 -->
    <div class="square-box-1">
      <div class="circle-90-left-top"></div>
      <div class="circle-90-right-top"></div>
      <div class="circle-90-right-bottom"></div>
      <div class="circle-90-bottom-left"></div>
      <div class="circle-180"></div>
      <div class="circle-180-roate"></div>
    </div>
    <!-- 3/4圆 -->
    <!-- 270度做法1：180+90 -->
    <div class="square-box-2">
      <div class="circle-180"></div>
      <div class="circle-90"></div>
    </div>
    <!-- 270度做法2：180+180(不旋转) -->
    <div class="square-box-3">
      <div class="circle-180-clip-top"></div>
      <div class="circle-180-clip-right"></div>
    </div>
    <!-- 270度做法3：180+180(旋转90度) -->
    <div class="square-box-4">
      <div class="circle-180-clip-top"></div>
      <div class="circle-180-roate90"></div>
    </div>
    <!-- 进度圆、进度条 -->
    <div class="square-box-5">
      <div class="circle-180-clip-top"></div>
      <div class="circle-180-roate90"></div>
      <div class="circle-90-process"></div>
    </div>

  </div>
</template>

<script>
export default {
  data() {
    return {};
  }
};
</script>

<style scoped lang="less">
.container-box {
  margin-left: 200px;
  margin-top: 300px;
  .square-box-1 {
    position: relative;
    width: 800px;
    height: 300px;
    background: wheat;

    .circle-90-left-top {
      position: absolute;
      background: green;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(auto, 100px, 100px, auto);
      border-radius: 50%;
      border: 5px solid red;
    }

    .circle-90-right-top {
      position: absolute;
      left: 80px;
      background: green;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(auto, auto, 100px, 100px);
      border-radius: 50%;
      border: 5px solid red;
    }

    .circle-90-right-bottom {
      position: absolute;
      left: 80px;
      top: 80px;
      background: green;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(100px, auto, auto, 100px);
      border-radius: 50%;
      border: 5px solid red;
    }

    .circle-90-bottom-left {
      position: absolute;
      left: 0;
      top: 80px;
      background: green;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(100px, 100px, auto, auto);
      border-radius: 50%;
      border: 5px solid red;
    }

    .circle-180 {
      position: absolute;
      background: green;
      left: 300px;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(100px, auto, auto, auto);
      border-radius: 50%;
      border: 5px solid red;
    }

    .circle-180-roate {
      position: absolute;
      background: green;
      left: 500px;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(100px, auto, auto, auto);
      transform: rotate(-45deg);
      border-radius: 50%;
      border: 5px solid red;
    }
  }

  .square-box-2 {
    position: relative;
    width: 600px;
    height: 300px;
    margin-top: 100px;
    background:wheat;
    .circle-180 {
      position: absolute;
      background: green;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(100px, auto, auto, auto);
      border-radius: 50%;
      border: 5px solid red;
    }
    .circle-90 {
      position: absolute;
      background: green;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(auto, 100px, 100px, auto);
      border-radius: 50%;
      border: 5px solid red;
    }
  }

  .square-box-3 {
    position: relative;
    width: 600px;
    height: 300px;
    margin-top: 100px;
    background:wheat;
    .circle-180-clip-top {
      position: absolute;
      background: green;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(100px, auto, auto, auto);
      border-radius: 50%;
      border: 5px solid red;
    }
    .circle-180-clip-right {
      position: absolute;
      background: green;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(auto, 100px, auto, auto);
      border-radius: 50%;
      border: 5px solid red;
    }
  }

  .square-box-4 {
    position: relative;
    width: 600px;
    height: 300px;
    margin-top: 100px;
    background:wheat;
    .circle-180-clip-top {
      position: absolute;
      background: green;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(100px,auto, auto, 100px);
      border-radius: 50%;
      border: 5px solid red;
    }
    .circle-180-roate90 {
      position: absolute;
      background: green;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(100px, auto, auto, auto);
      transform: rotate(90deg);
      border-radius: 50%;
      border: 5px solid red;
    }
  }
    .square-box-5 {
    position: relative;
    width: 600px;
    height: 300px;
    margin-top: 100px;
    background:wheat;
    .circle-180-clip-top {
      position: absolute;
      background: green;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(100px,auto, auto, 100px);
      border-radius: 50%;
      border: 5px solid red;
    }
    .circle-180-roate90 {
      position: absolute;
      background: green;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(100px, auto, auto, auto);
      transform: rotate(90deg);
      border-radius: 50%;
      border: 5px solid red;
    }
    .circle-90-process{
       position: absolute;
      background: green;
      width: 200px;
      height: 200px;
      // 上右下左
      clip: rect(auto, auto, 100px, 100px);
      border-radius: 50%;
      border: 5px solid yellow;

    }
  }

}
</style>