rgui-css-standard/src/tip/demo/index.md

Regular UI - Standard CSS Components

## 示例
### 基本形式

在`<span>`标签上使用`.u-tip`，主要用于提示表单信息。

<div class="m-example"></div>

```html
<span class="u-tip">请输入用户名</span>
<span class="u-tip u-tip-error">该用户名已注册</span>
```

### 颜色扩展

<div class="m-example"></div>

```html
<span class="u-tip u-tip-primary">Primary</span>
<span class="u-tip u-tip-info">Info</span>
<span class="u-tip u-tip-success">Success</span>
<span class="u-tip u-tip-warning">Warning</span>
<span class="u-tip u-tip-error">Error</span>
```