css-自定义单选框

<template>
  <div>
    <form action="" class="zm-form">
      <label><input type="radio" name="radio" value="pm25" checked="checked"><span>PM2.5</span></label>
      <label><input type="radio" name="radio" value="pm10"><span>PM10</span></label>
      <label><input type="radio" name="radio" value="noise"><span>噪音</span></label>
    </form>
  </div>
</template>

<script>
  export default {
    name: 'a9'
  }
</script>

<style scoped>
  .zm-form {
    font-size: 18px;
  }

  .zm-form input[type="radio"] {
    margin-left: 20px;
    margin-right: 5px;
    visibility: hidden;
    position: relative;
    cursor: pointer;
  }

  .zm-form input[type="radio"]:before {
    content: "";
    position: absolute;
    top: -1px;
    left: -1px;
     100%;
    height: 100%;
    visibility: visible;
    border-radius: 50%;
    border: 1px solid #9e9b97;
  }

  .zm-form input[type="radio"]:checked:before {
    border: 1px solid #41b2f1;
  }

  .zm-form input[type="radio"]:checked:after {
    content: "";
    position: absolute;
    top: 20%;
    left: 20%;
     60%;
    height: 60%;
    visibility: visible;
    border-radius: 50%;
    background-color: #41b2f1;
  }

  .zm-form input[type="radio"] + span {
    cursor: pointer;
    color: #9e9b97;
  }

  .zm-form input[type="radio"]:checked + span {
    color: white;
  }
</style>