按钮可以支持多种样式，例如：
{{% button href="https://elixir.bootlin.com/" %}}Get Linux Source{{% /button %}}
{{% button href="https://elixir.bootlin.com/" icon="fas fa-download" %}}Get Linux Source with icon{{% /button %}}
{{% button href="https://elixir.bootlin.com/" icon="fas fa-download" icon-position="right" %}}Get Linux Source with icon right{{% /button %}}
Get Linux Source Get Linux Source with icon Get Linux Source with icon right