Варианты имеющихся в арсенале кнопок
<a href="#" class="button">default</a>
<a href="#" class="button button_blue">blue</a>
<a href="#" class="button button_lightblue">lightblue</a>
<a href="#" class="button button_red">red</a>
<a href="#" class="button button_clean">clean</a>
<a href="#" class="button button_clean_blue">clean_blue</a>
<a href="#" class="button button_grey">grey</a>
<a href="#" class="button button_clean_grey">clean_grey</a>
<a href="#" class="button button_clean_red">clean_red</a>
<a href="#" class="button button_brown">brown</a>
large
, medium
.<a href="#" class="button button_large">large</a>
<a href="#" class="button button_medium">medium</a>
<a href="#" class="pretty-button pretty-button_violet link link_no-underline">
<span class="link link_white">pretty-button</span>
</a>
<a href="#" class="button button_promo ">promo</a>
<a href="#" class="button button_wide button_large c ">wide</a>