<a class="btn COLOUR">Button</a>
<a class="btn COLOUR no-dark-hover">Button no darken hover</a>

<a class="btn COLOUR-dropshadow">Button with a dropshadow</a>
<a class="btn COLOUR-border">Button border style</a>

<a class="btn animation COLOUR">Button animation</a>
<a class="btn animation bounce COLOUR">Button bounce animation</a>
<a class="btn animation hover COLOUR">Button animation and hover</a>

<a class="btn hover COLOUR">Button hover</a>
<a class="btn hover-scale COLOUR">Button scale hover</a>
<a class="btn hover-scale-inset COLOUR">Button scale inset hover</a>
<a class="btn hover-bounce COLOUR">Button bounce animation</a>

<button class="COLOUR">Button</button>

Preview

Normal buttons

Button Button no darken hover

Effect buttons

Button with a dropshadow Button border style

Animation buttons

Button animation Button bounce animation Button animation and hover

Hover buttons

Button hover Button scale hover Button scale inset hover Button bounce animation

<button>