.civicrm-multiday-event-register-button {
  color: #FFFFFF; 
  float: right; 
  background: #70716B;
  border-radius: 3px 3px 3px 3px;
  display: block;
  border: 1px solid #3E3E3E;
  cursor: pointer;
  font-size: 12px;
  font-weight: normal;
  margin-right: 6px;
  padding: 2px 6px;
  text-decoration: none;
  text-shadow: 0 1px 0 black;
}