<Button />

&:hover, &:focus

<Button variant="text"/>

&:hover, &:focus

<Button variant="outline"/>

&:hover, &:focus

<Button disabled/>

<Button variant="text" disabled/>

<Button startIcon="download"/>

<Button endIcon="download"/>

<Button size="sm"/>

<Button size="md"/>

<Button size="lg"/>

<Button color="default"/>

&:hover, &:focus

<Button color="primary"/>

&:hover, &:focus

<Button color="secondary"/>

&:hover, &:focus

<Button color="danger"/>

&:hover, &:focus