<cn>
#### 填底的按钮样式
实色填底的单选按钮样式。
</cn>

<us>
#### Solid radio button
Solid radio button style.
</us>

```html
<template>
  <div>
    <div>
      <a-radio-group defaultValue="a" buttonStyle="solid">
        <a-radio-button value="a">Hangzhou</a-radio-button>
        <a-radio-button value="b">Shanghai</a-radio-button>
        <a-radio-button value="c">Beijing</a-radio-button>
        <a-radio-button value="d">Chengdu</a-radio-button>
      </a-radio-group>
    </div>
    <div :style="{ marginTop: '16px' }">
      <a-radio-group defaultValue="c" buttonStyle="solid">
        <a-radio-button value="a">Hangzhou</a-radio-button>
        <a-radio-button value="b" disabled>Shanghai</a-radio-button>
        <a-radio-button value="c">Beijing</a-radio-button>
        <a-radio-button value="d">Chengdu</a-radio-button>
      </a-radio-group>
    </div>
  </div>
</template>
```
