Button

<!-- Variants -->
<button class="btn btn--primary btn--md">Primary</button>
<button class="btn btn--secondary btn--md">Secondary</button>
<button class="btn btn--outline btn--md">Outline</button>
<button class="btn btn--ghost btn--md">Ghost</button>

<!-- Sizes: sm / md / lg -->
<button class="btn btn--primary btn--sm">Small</button>
<button class="btn btn--primary btn--lg">Large</button>

<!-- Full width -->
<button class="btn btn--primary btn--md btn--block">Continue</button>

<!-- Trading (filled only): buy = green, sell = red -->
<button class="btn btn--buy btn--md">Buy</button>
<button class="btn btn--sell btn--md">Sell</button>