Correction: It is being applied, but to the wrong element. It is being applied to the <div> before the button. Thus, the frame around the button and not the button itself is receiving the class.
<div class=”wdform-element-section wd-flex daily-dose-button wd-flex-row wd-justify-content-left wd-width-100″>
<button type=”button” class=”button-submit” onclick=”fm_submit_form(‘8’);” data-ajax=”0″><span class=”fm-submit-loading spinner fm-ico-spinner”></span>Get Cynical!</button>
<button type=”button” class=”button-reset wd-hidden” onclick=”fm_reset_form(8);”>Reset</button></div>