vue 单选框自定义

<div>
    <div>
      <button @click="show=!show">show</button>
      <transition name="v">
        <div>
          <div class="female">
            <input type="radio" id="female" name="sex"  class="input"/>
            <label for="female" class="label">女</label>
          </div>
          <div class="male">
            <input type="radio" id="male" name="sex" class="input"/>
            <label for="male" class="label">男</label>
          </div>
        </div>
      </transition>
    </div>
  </div>
<style>
  .input{display:none;}
  .label:before{  content: "a0"; /*不换行空格*/
    display: inline-block;
    vertical-align: middle;
    font-size: 18px;
     1em;
    height: 1em;
    margin-right: .4em;
    border-radius: 50%;
    border: 1px solid #01cd78;
    text-indent: .15em;
    line-height: 1; }
  .input:checked + .label:before{
    background-color: #01cd78;
    background-clip: content-box;
    padding: .1rem;
  }

</style>