Button

There are three types of buttons, the default, the light, and the dark. The dark one is a slightly transparent one, using the accent colour, the light one is just a white one, and the default one is just the accent colour.

You can see them in use here.

<button class="oui-button">Button</button>
<button class="oui-button oui-b-dark">Dark Button</button>
<button class="oui-button oui-b-light">Light/White button</button>

Dark: oui-b-dark
Light: oui-b-light

You can use oui-button on any type of button, for example here.

<button class="oui-button">Button</button>

You can just surround this in an <a> to link it.