## link

* arco-pro/src/components/NavBar/style/icon-button.module.less

## less

```less
.icon-button {
  font-size: 16px;
  border: 1px solid var(--color-border-2);

  > svg {
    vertical-align: -3px;
  }
}
```



## css

```css
.icon-button{
    font-size: 16px;
    border: 1px solid var(--color-border-2);
}

.icon-button > svg{
    vertical-align: -3px;
}
```

## bench-compare

* less.js 5ms
* rust-less 0.085ms